The reality is that you measure and get information on all of these things to determine more accurately what odds you have. The act of measurement changes the probabilities, because if you do it right you will know more than you did before.
In theory all these things are controllable and no problem is unsolvable. Sometimes it’s even true (post-facto however, more often than not). That view is often the best for succeeding (or more precisely, NOT having that view often puts one at a disadvantage when it comes to succeeding).
But the probabilities are often the more accurate model. That is often the best model for deciding if you want to take a bet, or for comforting yourself later if it doesn’t actually work out perfectly. It really doesn’t help though (most of the time) with actually doing successfully.