Comment by gozzoo
7 hours ago
If i remember correctly Feynman said in one of his lectures that we know the mass of the electron with much greater precision than the proton, which may mean that it electrons are easier to study. I don't know if this is still true though.
Oh yes and so much so! Electrons are point-like (not composite like a proton) and interact only electroweakly (not strongly).
And neutrons are neither.