How old are the models of reality you’re working with?
How often do you update them?
When you built them — or when it’s time to rebuild them — where do you go looking for parts?
Some things update quickly, like a laptop.
Some things update certainly but occasionally, like the cars you might own over a lifetime.
And some things evolve constantly yet only demand attention from time to time, like a market or a culture or a political scene.
I still pack layers for Thanksgiving like it’s 20 years ago, and I’m surprised every year that it’s not so hard to stand out at the parade for a few hours without freezing.
A lot of little changes can add up to some really big ones, but my models of the world don’t always adjust accordingly.