garymortimer writes: "Earlier this month, Iran's news agency provided visual evidence that its government had figured out to make a fancy new drone that could take off and land vertically. What they didn't tell us is that they used Photoshop to make it stop taking off from the roof of Japan's Chiba University, which built the aircraft and never had anything to do with Iran's alleged version of it." Link to Original Source
We warn the reader in advance that the proof presented here depends on a
clever but highly unmotivated trick.
-- Howard Anton, "Elementary Linear Algebra"