The CD's (singular) tracks and the CDs' (plural) tracks. Or would it be CD's'? That's my one gripe with putting the apostrophe s for acronyms.
But then when talking about someone getting "all As" in school, it's easy there to realize what's being said, but when someone asks "What grades did you get in school?" And you respond "As," now it's just the word as.
Grammarizing spoken word is a major part of my job and I think about this shit all the time, and sometimes things conflict, and it's dumb, it's all dumb! That's it!
I dunno, if the vaccine was "safe," and it really comes down to will this stop me getting a cold, I'd take one for the team. Maybe not the flu or COVID, although COVID never affected me so maybe I wouldn't be a good candidate.
We just need an island of clones that we can test on, because clones aren't real!