Factorio is the kind of game where you're looking for better ways of doing the stuff you do. As I've explained elsewhere, in other online forums and also in the UnOfficial Factorio FAQ that I started late last year, Factorio really has 3 goals:

1. Make the magic science potions (red, green, blue and alien) so that you can climb the tech tree.

2. Defend your factory from the pollution-hating hippie aliens who keep attackint it.

3. Finish the end game by building the Silo, then making a Rocket inside it, and a Satelite as payload for the Rocket.

When I started out, I was very inefficient. I did things quite wrong, and quickly found myself finding ways that were easily 30%, 40% or 50% more efficient than the previous way, or something like that. Then another iteration that felt like a further 30% improvement, and then another. It was, for me, the kind of game where learning was fluid, fluent and intuitive. Most of it, anyway. I tried stuff, tried other stuff, compared, found that the new way of doing X was often better than the previous one. It wasn't long before I switched Peaceful_Mode off so that I had to defend my factory.