When you have a tree, text description is usually easy enough to follow When you have a graph your text starts to look closer to an adjacency list and is utter

When you have a tree, text description is usually easy enough to follow When you have a graph your text starts to look closer to an adjacency list and is utterly miserable to actually track a sequence you’re actually interested in, unless every interesting sequence is enumerated in turn Like #4 in TFA is visually a mess, but easy enough to find & focus a single pathway. textually you’d be jumping up and down paragraph descriptions trying to stay on topic (not unlike following code itself, with no debugger/ide support)