[JohnFen]

Interesting. I actually would group cars and engines separately. I'm always fascinated to get a peek at a different way of looking at things, thank you.

[ukj]

Obviously you can look at all the parts from whatever perspective you want.

It is your philosophical predisposition to dismantle things and understand how they work.

But when you are done learning you need to put all the parts back together and form one coherent/cohesive whole for a system to function.

It is the same old tension between reductionism, holism and systems thinking in the balance.