It all depends upon the context

color illusion
On the top of the cube on the left there are four squares that appear to be blue. On the cube on the right there are seven squares that appear to be yellow. If you look very carefully you will see that the blue squares on the left and the yellow squares on the right are actually gray, the exact same shade of gray. If you still don’t believe me you may have to cover up portions of the picture to compare them without the influence of the surrounding colors. I found it helpful to use a photo editing program to cut out the squares and compare them.

This illusion was created by Beau Lotto and demonstrates how we don’t perceive the world as it is, but we interpret what we see based on the context in which we see it. We have confidence in what we perceive because it works not because it is true.

A Sequence of Lines Traced by Five Hundred Individuals

It started out as a straight line.

A Sequence of Lines Consecutively Traced by Five Hundred Individuals is an online drawing tool that lets users do just one thing – trace a line. Each new user only sees the latest line drawn, and can therefore only trace this latest imperfect copy. As the line is reproduced over and over, it changes and evolves – kinks, trembling motions and errors are exaggerated through the process.
A Sequence of Lines Consecutively Traced by Five Hundred Individuals was first created as a tool to be used in conjunction with Amazon’s Mechanical Turk – an online labor market. Mechanical Turk workers were paid 2 cents to trace a line.

Watch the video here:

Portal 2 is just days away

I disovered Portal years after everyone else had stopped raving about it, but this time I’m ready for the sequal, Portal 2, before it comes out. It will be available for PC, Mac, Xbox, PS3 and Intracranial Implant on April 19. If you don’t mind spoilers check out a preview by PC Gamer.

I give a brief introduction to the original game here.

Portal is rated E10+
The Wikipedia article.