I've done hours of research into the new mRNA vaccines (not technically a vax but you get what I mean) and I've run into a problem. In theory these vaccines should be so harmless as to border on being ineffective. In fact, when they were introduced to the EUA approval process there was plenty of skepticism from the authorities that they would actually protect people and stop the spread significantly. My question is this: how can these vaccines be so safe in theory and still cause such intense side effects in the populace?