Well no, you often can actually. You can have positive information about the impossibility of something, for example the prospect of winning a chess game after losing your king. You don't need to play billions of games of chess to see whether it's possible.
Zoning changes happen all the time. Tax changes happen all the time. Subsidy changes happen all the time.
All 3 seem to be going swimmingly so far!
There is no material difference between impossible and challenging if the thing doesn’t actually happen.
It’s like Kramer saying he could have levels in his apartment it’s just that he doesn’t want them.