Poll: A video demonstrating how your memories mess with you.

[joshuaayt]

I got the fifteen, and saw the Gorilla... but, then, I've seen similar tests before, and spent the time thinking "Damn it, something is going to happen in a second, and it will probably throw off my counting."

 

[RaNDM G]

They did this on Brainiac. I got freaked out watching that episode since it was on late at night. Watching the video, I knew it would play something similar to that.

Here's the segment from the show I was talking about. The host refers to other intentional changes they made during the show.