OK, what's the risk if a vaccinated friend hangs out with an unvaccinated friend? I'd like for a stats geek to really crunch some numbers here. My guess is that the precautions recommended in that CNN article probably lower your risk of getting C19 from 0.02% to 0.01%. No matter what happens, the risk will never be zero in our lifetime. How long are we going to let this bug rule our lives?
I've had one friend who says that she doesn't worry about socializing with me (and my wife) cause we've had our first vaccine (which shows 80% effectiveness). I think that's a reasonable view on her part.