I think you're missing the point of the article (and the material you included). It's not that the method of inference is that interesting, its the fact that th

I think you're missing the point of the article (and the material you included). It's not that the method of inference is that interesting, its the fact that the game is able to make use of that inference at all. Every thing else about the algorithm is interesting: rollback, reconciliation, (de)synchronization, choice of delay, the the separation of game logic from rest of the game loop, etc. As the article details, it's extremely complex to do this right, to the point where many games just don't bother trying. Think about the time scale under which this prediction is made: 60Hz. Even the best players do not change input at nearly that rate. So it's clear that the current value is going to be the best estimate for the next value. That realization doesn't even begin to solve the problem though!