I wish I'd had more teachers like you - I might still be in school on my deathbed :-) So many want to teach WHAT, rather than HOW.

It IS hard, but does that mean we just sit on our thumbs until we have IT all figured out? That will be a long, LONG time (I hope). Why? Because once there is (absolute) certainty, what happens to freedom (creativity, etc)?

At some point, you just have to do the best you can do in the moment and be ready and willing to adjust as more information/understanding becomes available (and of course be willing to remain open (uncertain) and continual ly seek more, More, MORE!).