:) I actually I actually got the idea for the design when I was about 14. I thought it would be cool to have a t-shirt that was spray painted with lots of different colors, -just really sloppy graffiti. When I was spraying this shirt, I just created the hubwheel in gold paint on the lower right side of the shirt. I thought it was nice, and I doodled it from time to time ever since. When I was thiking about a logo for Hubski, it came to mind. I owe it to thenewgreen for suggesting that we use it for a sharing/voting mechanism.
I'm not familiar with the thing on the left. Can you explain?
It's a very popular optical illusion, shown in many textbooks. Basically, the orange circles in the middle are both the exact same size, even though they look like different sizes, due to the size of the blue circles surrounding them. I knew it looked familiar, but I couldn't quite put my finger on it until today.