Take that, Math!

I don't understand circles. To me it is impossible to be able to analyze and measure this shape. I have no idea how I managed to pass it in school. I just knew what numbers I needed to get and kind of figured out how that should happen - but I never understood why I reached those solutions and numbers. How do you quantify a radius? How can you comprehend this magical mystical shape made of infinite sides?

And spheres? Well, I just accept them. Spheres are planets and oranges. They need no more explanation than that.

But today -

Today I made a circle out of cardboard, duct tape and washers. And I feel pretty awesome about it.

(I still don't really get how though)