This arrow looks like it is pointing right but it's actually pointing left. This illusion relies on a clever combination of reflection, perspective, and viewing angle. The illusion arrow was invented by mathematician Kokichi Sugihara of Meiji University in Japan. Understandably, people vented their rage on social media.
(Score: 2) by loonycyborg on Wednesday August 07 2019, @12:01PM (2 children)
Limitation of this illusion is that it works only from particular angle. Very rarely you can know where potential observer will be in advance. Even a satellite isn't guaranteed to be straight ahead.
(Score: 2) by driverless on Wednesday August 07 2019, @12:20PM
Yeah, that's the problem. Was thinking of getting my GF one of these for her desk, but the fact that you need to look at it from exactly the right angle kinda killed it.
(Score: 2) by Alfred on Wednesday August 07 2019, @01:52PM