Almost always there's good reasons if a seemingly-obvious solution isn't much used. Sometimes it can be hard to understand why without a lot of in-depth knowledge, as it can depend on somewhat non-obvious aspects, typically in the practical realizations like in this case. With perfect sensors, dead reckoning would work like a charm.
However I find that thinking about the problem, coming up with these what-if solutions and then figuring out why they don't work, can be quite fruitful. Often leading to new knowledge that might actually be relevant down the line, and if not it's a great exercise in problem solving.
Almost always there's good reasons if a seemingly-obvious solution isn't much used. Sometimes it can be hard to understand why without a lot of in-depth knowledge, as it can depend on somewhat non-obvious aspects, typically in the practical realizations like in this case. With perfect sensors, dead reckoning would work like a charm.
However I find that thinking about the problem, coming up with these what-if solutions and then figuring out why they don't work, can be quite fruitful. Often leading to new knowledge that might actually be relevant down the line, and if not it's a great exercise in problem solving.