this time they were supposed to start in the same middle point, facing the same direction and vary the circumference of each circle by varying the distance traveled before turning. This should have resulted in a set of evenly spaced, perfectly uniform rings aligned to the right, all touching in exactly the same place. Some strange perturbation caused, or was caused by, a kind of computational drift.
Hopscotch only lets us use integers. The X and Y values along the perimeter of the circles can’t always be integers. This is my best guess for what may be happening. Some rounding or truncating of numbers may be happening.
Whatever the reason, it gives rise to an opportunity for colors to interact in unexpected ways, and for small, localized moments of beauty to come into being. This after many thousands of circles have been drawn.

