State estimation is the hidden backbone of robotics: the recursive maintenance of a usable belief about the world from incomplete, noisy, delayed, and asynchronous evidence.Get notified when this essay drops.Subscribe once and we'll email you the moment this essay — and every future Foundations essay — is published.you@example.comNotify meI agree to receive Foundations emails. See our privacy policy. Unsubscribe at any time.Back to all Foundations