Working out the possibilities.
If you want to use it, make sure it's good.
For your magical build needs.
Sometimes your tools lie to you.
Round and round. We'll, really just round. No "and round".
They're not your threads, but they're in your process.
You can keep the MTA alive without having to dedicate a thread.
But who uses that world-writable directory?
Putting together things you already have.
You'll have to invalidate it, either the easy way or the hard way.