[gpm]

If I had to explicitly say "tree", I agree. But if what I was writing was in fact not a tree, I think it would be substantially more difficult.

Sound theoretical underpinnings are usually necessary for a coherent system that allows for good abstractions.

Note that in code while I don't say the word "tree" while writing it. I create a tree with my braces (C) or indentation levels (python) and file structure. The language designers created a syntax using a tree. And so on.

I guess what I'm saying is that while the tutorial should not say tree, and I should not be thinking about tree nodes and edges while writing it, I should be writing a tree (and in code I am).

[stephc_int13]

I almost never think about anything as a tree, especially when I am trying to solve a problem with code.

I am familiar with the structure, but I've never found it practical as an abstract tool.