Sorry if this question has been answered already; I've searched, but couldn't find an answer or discussion. Question: If these charges are precisely equal, doesn't that imply that these particles are somehow related? IE, they were created from the same source particle, a particle that had a zero charge, and that somehow split into two particles with precisely equal and opposite charges? (Although, obviously, not equal masses.) But if protons are comprised of quarks, and electons are not, how can that be? I'm not a physicist, so please keep the answer simple!