Heart Surgeon Takes Notes from da Vinci 191
vivekg writes "Leonardo da Vinci probably never thought he had the proverbial Holy Grail to a revolution in heart surgery. Almost 500 years after da Vinci's death, intricate diagrams of the human heart made by him have inspired a British surgeon to pioneer a new way to repair damaged hearts."
Science (Score:5, Insightful)
Re:Science (Score:5, Insightful)
At least 90% of laymen have no concept of what the theory says or predicts, nor how it is tested. The way the theory gets presented in high schools across the country is absolutly unacceptable. Such a muddle, confused, and illogical presentaion of science directly leads to such pseudoscience as intelligent design. Experience has forced me to agree with von Mises, public schools should be banned from teaching science because they incapable of presenting it correctly and will only cause confusion.
Not teaching science in schools is not an option (Score:2, Insightful)
Uh. What's that? Are you advocating that schools should stop teaching science altogether or that just public school should stop teaching science? If you think the problem is with the public schools, then the obvious strategy is to increase the funding so that they can do their job right. If you're saying that teaching science in schools should be dropped altogether, then I d
Re:Not teaching science in schools is not an optio (Score:2)
Not teaching science in schools is not an option.
Sure it is. It is preferable to teaching it incorrectly, or worse, using the position of authority the teacher has to indoctrinate vulnerable children.
The public schools have repeatedly demonstrated that they are incapable of teaching science. By their nature they are incapable of teaching anything about wh
Re:Not teaching science in schools is not an optio (Score:4, Insightful)
Uh. No they don't. Where you live, they have the right to take their kid out of the class and homeschool them. Over here, there is not even the homeschool option.
I pay taxes and my money is used on stuff that I don't approve of. Do I have a problem with it? Of course not. That's the way how a society works! Sharing and making compromises. "My tax money should not be used on stuff that I don't like" is nothing but self-centered Ayn Rand inspired whining.
Re:Not teaching science in schools is not an optio (Score:2)
That's the way how a society works!
Instead of each spending our own money on what we want, we take someone else's money and spend it for them then let them turn around and do the same to us? That doesn't seem very sensible. Under your arguement there is as much justification for teaching creationism and banning modern synthesis if that's wh
Re:Not teaching science in schools is not an optio (Score:2)
Re:Not teaching science in schools is not an optio (Score:2)
Direct, uninhibited democracy is insane on any large scale.
Re:Not teaching science in schools is not an optio (Score:2)
By the same point, why should a majority have the authority to do as it pleases? Because it controls the guns? What if I have a nuclear weapon? Does that give me the authority to do what I want? If a majority can do anything it pleases, why are there such things as laws and rights?
The reason you see me as undemocratic is because I believe in limited government, something required by my ethi
Re:Not teaching science in schools is not an optio (Score:2)
I'm glad to hear it! Please let me know when I can opt not to have my tax money go toward the war in Iraq.
What's that you say? I can't opt out of the payment because I can't opt out of the benefits? How is that different from universal education? Or is there a way to opt out of a strong economy and an educated workforce that I'm unaware of?
Shine on you crazy diamond!
Re:Not teaching science in schools is not an optio (Score:2)
Re:Not teaching science in schools is not an optio (Score:2)
Re:Not teaching science in schools is not an optio (Score:2)
The public schools should focus on providing a basic education for those who have no other option. That is: reading, writting, and arithmetic should be the initial focus.
You're on the right track, but I think you're not going far enough. If it was up to me, I'd institute mandatory flogging for everyone going to school. That way, the only people (or kids) being educated would be the ones that really wanted to, and this system would produce only first-rate geniuses!
Re:Not teaching science in schools is not an optio (Score:5, Insightful)
Schools should be funded locally, and have local control. Unfortunately, the various levels of government have stolen the sources which were traditionally used to fund schools, so local funding is a problem which needs solution. This doesn't make it any less necessary. If the local students are to be taught lies, it should be because the local citizens have decided that that's what they want their children taught. (They will suffer the appropriate consequences...but their folly should not be forced on everyone else.)
This has been my position for over 2 decades, and everything I've seen during that period of time has only reinforced the opinion. Only at the college or university level should the state (e.g., Idaho or Pennsylvannia) have any involvement. The states should run the colleges, because specialized education needs to draw from too large an area of population for local funding to be reasonable. They should be tuition free, but have appropriately difficult admissions requirements, and may limit the number of open spots for admission. (The state can decide how many English majors it needs to educate, and how many BioChemists, and fund that many classes of the appropriate type.)
At all levels, private schools should continue to be an option.
Some will argue that this will unfairly penalize the children of poor cities. In my experience in those cities the federal government alone extracts more funds nominally for education than are expended on schooling by all levels of government combined. This may not be true everywhere, but it's certainly largely true. Also, the most important parts of schooling don't require much in the way of funding, though they do require the cooperation of the parents. Thus if the parents will not cooperate with the local school, the school should have the right to refuse to allow the student to attend lessons. Disruptive students are not something that should be tolerated...but when schools are used in the way in which they are currently, that's what you get.
That said, not all students are academically inclined. There needs to be a flexible "tracking" system, which allows those mechanically inclined to develop their skills as well as a track which allows the academic students to develop THEIR skills. I envision one hour per day during elementary school (after third grade) where students experience are instructed in "enrichment specialties", which should include things like band, set theory (arithmetic should be mainstream...by rote, and sorry), wood/metal/plastic shop, etc.
OTOH, this requires a fairly large elementary school. Other benefits would accrue if elementary schools were local enough that all students could walk to them. That way the neighborhood kids would study together. This would probably mean that, e.g., grades K-3 would all be taught in the same room by the same teacher. (If you have enough students to split this in two, perhaps you could split them by distance rather than by age.) This WOULD be an acknowledged combination school and babysitting service, and play areas would be an important part of the situation. Teachers in this class would be expected to LIVE in the school, and keep it open. Provisions for substitutes would be necessary. Etc. Class sizes would be small, but the salaries would be enough to live on given the free rent. (I envision that most of these teachers would start out as mothers raising their kids. So room would need to be sufficient to handle not only the teacher, but also a husband or other partner and their children. With a safe fenced area around it which is the school yard.)
N.B.: A lot of what I'm proposing is just my idea spinning of how it might ideally work out. The important parts are:
1) No central control.
2) Local choice on funding & curricula & environment.
Re:Not teaching science in schools is not an optio (Score:2)
Re:Not teaching science in schools is not an optio (Score:2)
We've got a real problem here in the Lone Star State with public school funding. Our Supreme Court has declared that local funding in unconstitutional under the Texas Constitution. The reason being that due to differences in the value of the local tax bases there is inequitable funding between 'rich' and 'poor' school districts, which in turn leads to an inequitable quality of education between the 'rich' and 'poor' school districts.
For the last decade t
Re:Not teaching science in schools is not an optio (Score:2)
It can be cynically said that "the government educates you because they want to tax you", and it's at least partially true. If people who've lived in a certain locale only teach subjects related to that locale (eg. farmer
Re:Not enough funding! (Score:2)
The goal is to privatize the education system so that parents can do their own thing, but how do you determine where the vouchers can be used? Most of the proponents say that the government will have "oversight" to determine which schools are "appropriate". How is this any different then what we have now? If you let parent's spend the money on any school they want, isn't that just about the same as a check
Re:Science (Score:2)
I remember my high school biology class. Instead of learning biology, we spent large amounts of time doing completely useless stuff like memorizin
If I had mod points... (Score:2, Insightful)
Cause and effect? (Score:2)
I think you've got your chain of causation confused. Evolutionary theory (at least amongst humans) is not recorded until long after notions of intelligent design. Perhaps you meant "directly leads << to the enforcement of peoples concepts of theories in the realm of >> pseudoscience [such] as intelligent design"?
Funnily enough much of modern day science has a
Re:Science (Score:2)
Mises taught that left alone, people would and could take care of themselves and that they would naturally seek their own happiness, but that powerful interests used the power of government to gain special privilages causing the masses to suffer. His life's work was dedicated t
Re:Science (Score:2)
As to the Institute, several of it's members are anarchists (e.g. Hans Hopp
Re:Science (Score:3, Interesting)
Leonardo's contributions to science and technology are mostly in the form of meticulous observation and clever design. That sort of thing doesn't get invalidated by the passage of time. If he had been more of a theoretician, modern scientists would sneer at him, they way they do at Aristotle — whose theories were the bas
Re:Science (Score:2)
I'm glad someone found some public use for something that in this day in age would be under copyright. I hope some lawyer or wordsmith can craftily use this story to the public's advantage and make a successful argument against patents and copyrights.
New way to repair damaged hearts... (Score:5, Funny)
Re:New way to repair damaged hearts... (Score:2)
Re:Hehe... (Score:2)
No it's not funny. Heart disease doesn't necessarily mean bad lifestyle. Some people just get screwed by fate. Have a stroll through a children's hospital lobby someday and see if your empathy still works.
Re:Hehe... (Score:2)
He likes to tell people his watch is making the noise.
The joke is, he wears a digital watch.
Re:Hehe... (Score:2)
"You have a loud watch."
"I'm not wearing a watch."
"...??"
Re:Hehe... (Score:2)
Re:Hehe... (Score:2)
Again, it was just a personal thing for me, so I prolly overreacted.
Aha! (Score:5, Funny)
The protection of red tape. (Score:5, Insightful)
Then again, I might be confusing the Da Vinci Code with reality. Damned fiction based on facts. It's probably safest to just say that I HEARD that he exhumed corpses. I didn't know him personally.
Re:The protection of red tape. (Score:5, Interesting)
It's not that he exhumed corpses, it's that he studied them. (Which is partly how he became so good at realistic stone carving.) Ya see, if you studied the corpse, you could eventually figure out how they died. And well, so many members of royalty and people involved with powerful people died under "mysterious circumstances" that the survivors (who in many cases were the next in line for the position) didn't want to be implicated/accused/beheaded, so that anything that could lead to autopsies were pretty much outlawed.
Funny you should say that... India. (Score:3, Interesting)
In India it is not unheard of that doctors will take organs from persons or bodies, such as valves in the case of bodies, for transplantation to 'customers' who need them.
The deceased may never have signed a donor form, and the family is not informed.
Neither is the recipient - they simply aren't told what type of valve they're getting (artificial being the common assumption).
To paraphrase a s
Re:Funny you should say that... India. (Score:2)
Re:Funny you should say that... India. (Score:2)
However...
"The organs need to be matched and harvested within a few minutes of death otherwise the organs are damaged and become useless."
Harvesting within minutes of time of death is no problem if the deceased was a hospital patient at any point.
Matching (and testing for disease, etc.) can be done long (compared to those minutes) afterwards.
The only 'crucial' bit is how long you can keep the organs on a preservative -
Re:Funny you should say that... India. (Score:2)
Well (Score:4, Funny)
how much pure knowledge have we discarded? (Score:3, Interesting)
Disclaimer: this post is philosophical drivel...
I wonder how many insights from the past we as a "civilization" may be whistling past. In our smug (seemingly) mastery of technology I often feel a sense of something missing, or just not quite in the right place. Today we can instantaneously retrieve and play on our mp3 players any song that tickles our fancy, but to what end? When sales of Britney outstrip sales of the Emperor Concerto something is out of whack.
Base and rank commercialism has overtaken sensibility. Our choices are far less choices and far more subtle (and sometimes otherwise) manipulation of our choices by mass market driven money making machines.
For example, the food industry: did you know that one of the most healthy foods you can eat is tuna? And if you're trying to lose weight it can be a keystone in that goal. Did you know that some brands of tuna have artificially introduced certain appetite inducing chemicals? No intrinsic added value to the food, just a manipulation of you to buy more food (hopefully, their tuna).
Now, to relate all of this back to the original article. What percentage of medical breakthroughs and research have anything to do with cumulative knowledge? What percentage is just purely money driven?
It's only my opinion, but "we" as a civilization will show true evolution when we take use of true knowledge and think less about everything as "business". Business is an artifact. Truth and knowledge serve more faithfully.
Re:how much pure knowledge have we discarded? (Score:2, Insightful)
Re:how much pure knowledge have we discarded? (Score:2)
Re:how much pure knowledge have we discarded? (Score:2)
Re:how much pure knowledge have we discarded? (Score:2)
Re:how much pure knowledge have we discarded? (Score:2)
Re:how much pure knowledge have we discarded? (Score:2)
But that has nothing to do with what yagu posted. He listed a bunch of problems he has with the world: people not liking his favorite music, t
Re:how much pure knowledge have we discarded? (Score:2)
A quotation from the book (Section 4, under heading "3. INJUSTICE"):
At this point I stopped reading. When someone starts claiming that not only animals have an inborn impulse to destroy human life (they don't; they have an inborn impulse to eat and protect th
Re:how much pure knowledge have we discarded? (Score:2)
Re:how much pure knowledge have we discarded? (Score:2)
Re:how much pure knowledge have we discarded? (Score:2)
I think you missed the point. The passage is concerned with the Romantic movement's view of nature -- that it is benevolent and exists in a natural state of plenty.
In reality, nature has nasty things like destructive weather and animals whose instincts run counter to human life. Man left alone in nature
Mayhaps... (Score:2)
The problem isn't commercialism, it's the value placed on wealth above all other things. This is a cultural p
Re:how much pure knowledge have we discarded? (Score:3, Informative)
While tuna is actually an excellent source of protein (remember that a healthy diet needs many other things as well), there is a downside: eating large quantities can introduce the risk of consuming too much mercury; here's two interesting links:
http://66.102.7.104/search?q=cache:1dWBudmqB9cJ:ww w.mercurypolicy.org/new/documents/CanTheTunaReleas eFinal061903.pdf+tuna+mercury&hl=en&client=safari [66.102.7.104]
http://www.nrdc.org/health/effects/mercury/tuna.a [nrdc.org]
Re:how much pure knowledge have we discarded? (Score:2)
Truth and knowledge serve more faithfully.
Past experience has shown that there's always more than one truth. Whose truth do you think should prevail?
Re:how much pure knowledge have we discarded? (Score:3, Interesting)
Holy crap! As someone who eats a heck of a lot of tuna, I'd like to know more about this. Alas, googling for "appetite" and "tuna"
Re:how much pure knowledge have we discarded? (Score:4, Insightful)
When sales of Britney outstrip sales of the Emperor Concerto something is out of whack.
Could it be your own inflated value of classical music that's out of wack? Britney Spears sucks in more ways than I can count, but I see no intrinsic value in classical music over any other form of music. You really want to know why Britney Spears outsells music that doesn't suck? It's because the music industry thinks its only consumer is the 13-22 crowd. Britney Spears captures probbably half of that age range, so she sells a lot.
Base and rank commercialism has overtaken sensibility. Our choices are far less choices and far more subtle (and sometimes otherwise) manipulation of our choices by mass market driven money making machines.
No, the problem is most companies are run so they can't see past say 5 years in the future (and those are the visionary companies). It's all about short term profits and "playing it safe". It's nothing to do with base and rank commercialism and everything to do with short sighteness.
For example, the food industry: did you know that one of the most healthy foods you can eat is tuna?
No I didn't, nor do I believe it from some guy repeating it on slashdot.
Did you know that some brands of tuna have artificially introduced certain appetite inducing chemicals?
I find this to be a very specious claim. Please provide some kind of reference for this and exactly what you mean by "appetite inducing chemicals". Anything that tastes good could potentially be an "appetite inducing chemical".
Now, to relate all of this back to the original article. What percentage of medical breakthroughs and research have anything to do with cumulative knowledge? What percentage is just purely money driven?
I don't even know where to start with this statement. My guess is a lot of research isn't driven by pursuit of money. Just look at the research done at major universities and you'll find most of it isn't profit driven. Research that isn't profit driven is important because companies don't like funding things whose value isn't immediately apparent. When you take on that attitude you get a bit of tunnel vision. There's obviously a lot of research that is profit driven. What's wrong with that? Without it you'd just have less research going on, not more. Unless the profit driven research is somehow threatening the non-profit driven research I fail to see any problem with profit driven research.
It's only my opinion, but "we" as a civilization will show true evolution when we take use of true knowledge and think less about everything as "business". Business is an artifact. Truth and knowledge serve more faithfully
I'd agree that this current trend toward looking at everything as "business" is pure insanity. I'm not sure that "truth and knowledge" are the perfect goals we should all be striving for. "truth and knowledge" are abstract ideas and not actual goals to be sought after.
Re:how much pure knowledge have we discarded? (Score:3, Interesting)
No, Classical Music (and music of that general category) is provably more musically complex and sophisticated than almost all popular rock-offshoots (with certain exceptions). There is so much irony in that "music geeks" who pride themselves on finding obscure indie bands and having huge music collections are actually unbelievably myopic in their understanding of music. It's all in a very narrow band of genres by bands that are basi
Re:how much pure knowledge have we discarded? (Score:2)
Ah yes, Chicken of the Sea... I love it.
But I stay away from Buffalo Wings. I don't eat the other red meat.
Re:how much pure knowledge have we discarded? (Score:2)
Don't worry. In 100 years, no one will listen to Britney anymore, but people will still be listening to the Emperor Concerto.
Re:how much pure knowledge have we discarded? (Score:3, Insightful)
different views (Score:5, Interesting)
Re:different views (Score:2)
I think there's a good reason for this: the way it has always been done has proven to work, and most patients don't like to be experimented on.
Re:different views (Score:2)
Yes, I do. Our pediatrician mentioned a condition called pyloric stenosis after I brought our infant son in for a checkup. He had thrown up the night before. Details here [pedisurg.com]. Basically the doctor said our son didn't have this condition and not to worry. Of course like many dads, I did worry a little bit. I went home and looked up information on it. The surgical pr
Re:different views (Score:2)
Re:different views (Score:2)
Am I missing something? (Score:5, Insightful)
Re:Am I missing something? (Score:2, Interesting)
Re:Am I missing something? (Score:2)
Re:Am I missing something? (Score:2)
Re:Am I missing something? (Score:2)
so, anyone with a useful link?
Floppy mitral valve (Score:5, Informative)
BS (Score:3, Insightful)
Go read http://www.guardian.co.uk/life/badscience/ [guardian.co.uk] backstories and learn why you should never listen to the mass media when it comes to scientific discoveries. I'm really surprised this got posted to
Re:BS (Score:5, Informative)
rancis Wells, a consultant cardiac surgeon at Papworth Hospital in Cambridge, England, said he had a "eureka moment" as he pored over drawings and notes by the artist in the royal collection at Windsor Castle.
With Da Vinci's understanding of the importance of the opening and closing phases of the valve, Mr Wells has worked out how to restore the valve's normal and full variability in opening and closing properly.
"That has been a big step forward," he said yesterday.
So, yes the work of Da Vinci 1500, did lead to some modern improvments in medicine today!
Re:BS (Score:2)
Re:BS (Score:3, Informative)
Until now, surgeons have narrowed the diameter of the valve by removing a square portion of one of the flaps. Now, by closing the gaps on each side of the prolapsing flap and cutting out the excess tissue in a V-shape, the surgeon can make the valve work properly again.
Re:BS (Score:2)
Re:BS (Score:2)
Re:BS (Score:3, Insightful)
1. Read article.
2. Don't get answers to questions.
3. Don't be willing to investigate further into the matter.
4. Don't know anything about the article's topic.
5. Don't want to look like an idiot on Slashdot.
6. Call bullshit to save face.
Well done.
closed source? (Score:2)
Now medicine is a monopoly (Score:2, Informative)
Before Leonardo, in the early Middle Ages, say, when the Decameron was written (13++) physicians were not called "Doctors" because they did not have doctoral degrees. Only Theologians and Lawyers were Doctors. The best eaxample is Toma De Aquino, "Doctor Universalis" who had all the doctorates of the time, but was no physician.
Re:Now medicine is a monopoly (Score:4, Interesting)
Re:Now medicine is a monopoly (Score:2)
Leonardo's best contribution may be... (Score:5, Insightful)
His anatomical knowledge came from his post-mortem dissection work, which the Church forbade.
Great minds of the past shouldn't just be honored for their great contributions to art and science. In fact, it may almost be more important that they defied the religiously dictated laws of their times. Even Isaac Newton, who may the most important scientist in our history, dabbled in occult beliefs that some feel led to his gravitational theory.
I tip my hat to Leonardo, Galileo, Newton, and others for having the guts to stand up to the religion to advance humans forward.
Re:Leonardo's best contribution may be... (Score:2)
I think the illegally and immorally exhumed corpses had the guts; the scientists of the past merely examined them
Re:Leonardo's best contribution may be... (Score:2)
Um...Newton was a devout Christian. While he may have dabbled in mildly occult investigations, his beliefs were pretty thoroughly steeped in the standard Christian fare. He writes in Principia
Re:Leonardo's best contribution may be... (Score:2)
Re:Leonardo's best contribution may be... (Score:2, Informative)
Guess what? The Church won't let me do what I want with my body because it is against their beliefs. And I'm sure the Church scared the hell out of people with ideas that they couldn't go to heaven if their deceased bodies were "desecrated."
Leonardo did his work in the only way he could. Would you rather the world still be ignorant of the body to this day and not have life saving surgeries performed?
Re:Leonardo's best contribution may be... (Score:2)
Why didn't they think of this earlier? (Score:2)
Old Joke (Score:4, Funny)
The famous surgeon, a bit surprised, walked over to the mechanic working on the motorcycle.
The mechanic straightened up, wiped his hands on a rag and asked, "So Doc, look at this engine. I also can open hearts, take valves out, fix'em, put in new parts and when I finish this will work just like a new one. So how come I get a pittance and you get the really big money, when you and I are doing basically the same work?"
The surgeon paused, smiled and leaned over, and whispered to the mechanic..... "Try doing it with the engine running!
Re:Old Joke (Score:2, Funny)
Try doing it through the exhaust pipe.....
Doing things 'differently' in medicine is the root (Score:5, Interesting)
Re:Doing things 'differently' in medicine is the r (Score:3, Insightful)
Part of medicine is research. You can be sure the first patients to receive a new technique have signed appropriate waivers.
:)
You have the soul of an HMO administrator.
He sited Leo
Leonardo as an artist not as a scientist (Score:2, Insightful)
Re:Leonardo as an artist not as a scientist (Score:2)
Re: (Score:2)
Re:Ahead of his time (Score:2, Insightful)
Most of the time you don't really know until you get there.
Re:Ahead of his time (Score:3, Interesting)
Re:A better cure for a broken heart (Score:2)
Ten liters of ice cream...with a side of chocolate ;-)
Re:Don't mod up both parents are worng (Score:2, Informative)
Sigh..... Read this http://en.wikipedia.org/wiki/Surname#Italy [wikipedia.org] And I quote: