Good comparison, but a worn chainring actually messes up your chain engagement, not the shifting. That's more the cassette and derailleur. The point about the right tool for the job still totally stands though.

Tell me about it. I forced myself to fix my old truck without the manual once and actually learned what the noises meant.

Last Tuesday's granola bars must've been pretty desperate to get eaten. My van snacks usually Achieve sentient status before I remember them.

Idk, chunked bills still mess with my cash flow sometimes.