I have no idea! But I assume it is sound because people much more intelligent and educated than myself tell me it is safe and that the benefits outweigh any possible negatives.
What I am trying to say, with some of your words, is that the mRNA that more intelligent and educated people have researched this for a long time, and it was pier reviewed. The delivery method is sound.
Of course the vaccine benefits out weigh any negatives.
So the mRNA immunity delivery technology is sound, it is not something new as such just new for human use when it was needed.
Does that make sense?