[piotr_krzyzek]

Angular as in circles, rounded corners, spheres and generally not grid based designs?

Originally the idea came out of necessity. Computers cannot do circles. They can just do many-MANY-edged 'things' that appear as circles to us.

If you draw a simple circle in your favourite graphics program (not a vector image), save and it and zoom in; you'll notice pixels right? Well, those are the edges/lines that I was talking about.

Also, put three blocks in a row. They will be more space efficient for putting stuff into than three spheres/circles in that same area. That is why a circle of Diameter D can fit into a cube whose dimensions are DxDxD and still have room to spare.

Squares (which is what pixels on your monitor are anyway ... usually at least) are simply more space effiecient.

Though many designs do use circles to enhance or bring to attention a certain topic, message or idea.

You can though create a 'angular' design. But it'll be very much so on the creative side of things and won't fit most standard uses.