[maciejgryka]

I think instructor is great! And most of our Python code is typed too :)

My point is just that you should care a lot about preserving optionality at the start because you're likely to have to significantly change things as you learn. In my experience going a bit cowboy at the start is worth it so you're less hesitant to rework everything when needed - as long as you have the discipline to clean things up later, when things settle.