Gravity Mine, redux

So, most people figured out the video I posted about on Friday. The camera was simply turned upside down, and that made the rocks appear to fall up. This was a very simple trick, and it's not like the videographers were trying really hard to make it look real, yet a lot of people fell for it (haha! Get it? Fell!). A lot of the comments on that entry were from people who couldn't believe anyone would think it was real, given how simple (and in hindsight, how obvious) the trick was. But, in my experience, I've found that a lot of folks will quite easily be perplexed by such a thing. It's not that they're stupid; far from it. It's just that they are not used to thinking critically about what they see. Thinking that way takes practice, and it's easy -- far too easy-- to let those guards ...