I’m sure you’ve already considered it, but from that description it sounds very much like make. That compares the input files’ timestamps to the output files’ timestamps, so it might be different to your plan though.

Cars still do. Whatever that thing is doesn’t.

That’s just crazy talk. If we don’t listen to the billionaires the line might not keep going up quite so fast. For the purposes of this argument, please ignore TSLA, the climatologists obviously got to that one.

That’s how it’s going to have to be until the US administration starts to act reasonably, sorts out it’s agricutural system and generally shows that it’s a beneficial member of the global community for a good long time. I think the rest of us will have moved on by then, realigning alliances and generally making things better without them. The US and Russia will fight that with every dirty trick they have, and as a global community, we’ll have to be ready for that.

I don’t think it’s entirely crazy talk, I can also see how this could end up makibg other countries work better together, but the path there is narrow and trump, his adherents, and puppetmasters will be doing everything in their power to stop it happening. At least, everything short of not destroying their allegences and friendships.