There are some lower hanging fruit in my opinion. You see it when dealing a lot with beginners: - variable names that could automatically rejected as bad "car

There are some lower hanging fruit in my opinion. You see it when dealing a lot with beginners: - variable names that could automatically rejected as bad "car = Apple()" - general confusion about singular vs plural: "cars = car" Variable names are too important for the computer to be totally oblivious to their meaning, yet this is how all programming languages work.