[brians]

Two is the number of electrons in He, and the number of slots in the lowest orbital. Two appears in nature.

Circles appear in the shape of that same s orbital, though, so I don't see how to avoid pi.

[pbhjpbhj]

There's no such thing as an S-orbital, there a probability distribution where a bounded probability produces an approximate sphere, in any universe with more than two charges that sphere is going to be 'irregular'.

The parent argument works here as much as for fingers though, those 2 electrons are identical but their spin differs. All electrons differ in the Standard Model by either spin or location.