[mrami]

A bit of a tangent, but boson vs. fermion is not a massless/massive split. There are massive bosons. Rather, it's a split on the qualities of the objects' spin, and thus whether they obey the Pauli exclusion principle.

https://en.wikipedia.org/wiki/Boson

[nanomonkey]

Ah yes, you're correct. I see that I remembered that incorrectly.