^ This is the problem. Not only that, solving 10 bugs (especially those more difficult nondeterministic concurrency bugs) at the same time is hideously harder t

^ This is the problem. Not only that, solving 10 bugs (especially those more difficult nondeterministic concurrency bugs) at the same time is hideously harder than solving 1 at a time. As a Director of Engineering at my last startup, I had an "all hands on deck" policy as soon as any concurrency bug was spotted. You do NOT want to let those fester. They are nondeterministic, infrequent, and exponentially dangerous as more and more appear and are swept under the rug via "reset-to-known-good" mitigations.