I think if you wanted to get weird with the control flow like this you might as well make a state machine. All of this seems to be completely missing the reaso

I think if you wanted to get weird with the control flow like this you might as well make a state machine. All of this seems to be completely missing the reason we even have stack based programs to begin with: they are inherently easier for programmers to reason about. I think these effects would ultimately lead to a bunch of hard to find bugs, all to replace the functionality of a callback.