Inappropriately Touched by E.T.

Someone shared this image on Facebook today, with the header "Seriously !! Still believe we are alone ?"It looks like you can see it, and the comments, without being logged into Facebook, which is handy. (It was posted by Milky Way Scientists, apparently affiliated with NASA, who also posted this smokin' beefcake photo of Albert Einstein. Maybe they should put out a calendar along those lines?)

Inappropriately Touched by E.T.

Someone shared this image on Facebook today, with the header "Seriously !! Still believe we are alone ?"It looks like you can see it, and the comments, without being logged into Facebook, which is handy. (It was posted by Milky Way Scientists, apparently affiliated with NASA, who also posted this smokin' beefcake photo of Albert Einstein. Maybe they should put out a calendar along those lines?)

Keep Telling Yourself: It's Only a Cartoon ...

I very rarely disagree with XKCD's cartoons, but this one baffled me. The explanation here doesn't help.Yes, I know, it's a cartoon, not a philosophical or scientific argument. But the cartoonist is very serious about his math and his science. And so much here is wrong.I'm sure that gliding in a wingsuit like the one depicted is fun; I've fantasized about free flight myself, many times. But

Keep Telling Yourself: It's Only a Cartoon ...

I very rarely disagree with XKCD's cartoons, but this one baffled me. The explanation here doesn't help.Yes, I know, it's a cartoon, not a philosophical or scientific argument. But the cartoonist is very serious about his math and his science. And so much here is wrong.I'm sure that gliding in a wingsuit like the one depicted is fun; I've fantasized about free flight myself, many times. But