Estimating future possibilities
A common and rather hazardous fallacy is pointing to present limitations to infer future possibilities.
It presumes little to no progress in the intervening time which is obviously not true.
Once you commit to the fairly basic and reasonable assumption that progress over time is a) possible and b) likely, your sense of what you are capable of accomplishing broadens significantly.
Part of why limitations endure is we keep believing in them.
Part of why we reach bigger goals than we’d previously imagined is because we fully believed in our ability to transcend them.