[gzread]

But which system first? Could be climate, could be financial, could be political (as in "politics is the alternative to violence")

[gaigalas]

I'm talking more about a slow decay that is not obvious to a single generation. One person in one lifetime wouldn't even smell it, but everything would be slowly corroding underneath.

Definitely not a big single disaster scenario. More like a "wait, we don't fix things anymore" or "wait, we have way less food variety than before" realization when it hits.