You’re underestimating the ADHD hyper focus duration. As long as the problem is interesting, ADHD people can hyper focus on one problem and only that problem for days/weeks at a time until they solve it, or the problem gets boring, or they find a different shiny thing. Creating/inventing a jade stone tool is exciting. You can spend days trying to make it just perfect, finding ways to sharpen it that others don’t know; that’s an ADHD person’s cup of tea. However once you make the first tool, it’s no longer interesting. You move on to hyper focus on something else.
You’re underestimating the ADHD hyper focus duration. As long as the problem is interesting, ADHD people can hyper focus on one problem and only that problem for days/weeks at a time until they solve it, or the problem gets boring, or they find a different shiny thing. Creating/inventing a jade stone tool is exciting. You can spend days trying to make it just perfect, finding ways to sharpen it that others don’t know; that’s an ADHD person’s cup of tea. However once you make the first tool, it’s no longer interesting. You move on to hyper focus on something else.