ananyo writes: "Back in August last year, Slashdot ran a story about a study reportedly showing heavy mairjuana use in teenagers had been linked to a decline in IQ in later life. Now, a new analysis suggests that the study may have been flawed. Using the same data, the researchers found that they could explain the IQ drop by properly accounting for socioeconomic factors — such as individuals from poorer backgrounds being more likely to smoke cannabis as well as having reduced access to schooling."
"If you want to eat hippopatomus, you've got to pay the freight."
-- attributed to an IBM guy, about why IBM software uses so much memory