The message is for backpackers. It’s built on the Boy Scout motto, “Be Prepared”.
You can’t anticipate, nor can you control, everything. You can identify risk and execute to mitigate it. You can’t eliminate it.
When things change unexpectedly, you adjust, or you stay put and wait it out. SOmetimes you pull out.
Benchmarks and milestones can help.
So can being extremely frugal with your resources.