> how people wrap their head around multiple changes in multiple features at the same time? Long before AI I routinely had 5 parallel development environments

> how people wrap their head around multiple changes in multiple features at the same time? Long before AI I routinely had 5 parallel development environments I would flip between. (I do distributed systems stuff, think HPC-adjacent clusters, when you're too big for Kubernetes and too small for supercomputing). One would be running long-running tests for my current changes, one being reset to a clean state, and 3 more on standby so I had 100% "duty cycle" (the reset took a while). You got used to multitasking.