[myshpa]

> It's us. We're the ones consuming the bulk of these resources

Agree.

> What if some process ends up accelerating things faster than expected?

I think we're already there (for example, in quite few studies 2030 is the new 2050 for 1.5C target). Sea temperatures (esp. in the nothern sea) and ice cover also seems to change faster than predicted (we could have ice free summers in the arctic before 2030, and thawing of greenland is also faster than expected).