To use a tortured metaphor: Like any pathfinding problem, sure slow and iterative is an important part of the algorithm but so is backtracking. I'm inclined to

To use a tortured metaphor: Like any pathfinding problem, sure slow and iterative is an important part of the algorithm but so is backtracking. I'm inclined to "if it ain't broke don't fix it", but it's also just as true that this greedy algorithm just leaves us at a local optima.