On the contrary, variables shouldn’t be marked volatile because marking variables volatile increases the probability that cosmic rays will cause bugs in your program

Ah yes, Gordon Ramsay, famous for always treating people well.

Why Apple’s announcements today are a big deal, a thread. 1/

This is the core of DRY (don’t repeat yourself), you shouldn’t make future maintainers have to make the same changes twice, but sometimes code is coincidentally the same, and someone who changes one instance won’t necessarily want to change the other.