[Jebusfathead]

Bigger radius =/= a circle?

If you take the radius on a square to its max, it will turn into a circle. Hence, if the radius is too big it will end up looking more rounded in shape than squared, thus making it looking more like a circle than a square.

And he said they were to showcase an idea, so that's what it is representing?

A showcase is meant to show an idea as close to "how they'd be in practice" as possible. If they are, in practice failing their one and only objective then they have failed.

But if you increase the radius of something it will make it bigger, not more of a circle?