A very interesting test of cognition - can you count the basketball passes?
And here is an optical illusion that demonstrates an interesting quirk in our visual perception
Here is a wide selection of fascinating optical illusions
RT @raif_badawi: https://t.co/qx9Kf5P6Q5
We've learned to fly the air like birds, we've learned to swim the seas like fish...and yet we haven't learned to w… https://t.co/ZTmB3EZTnY
RT @sapinker: A good day to read MLK's fascinating My Pilgrimage To Nonviolence. He learned from Enlightenment thinkers, rejected Marx, Nie…