The 'Amazing T-Rex Illusion'

Pretty much everyone has seen the revolving hollow mask optical illusion, as demonstrated with an Einstein mask in this clip from QI.


But are you familiar with the the clip of the T-Rex who turns to face you?





It's because we're programmed to see faces, so our brain fills in the missing bits the way we'd expect to see a face. (I guess it's the same reason someone spotted the so-called 'Hitler Tea Kettle', manufactured by JC Penny, a while back…)


Which, of course, should not be confused with this little item!