a certain amount of time effectively it's likely moving horizon and for any fixed effective horizon there is a problem to solve which requires larger horizon so if I look ahead you know five time steps I'm a terrible chess player right and I need to look ahead longer if I play go I probably have to look ahead even longer so for every problem no forever horizon there is a problem which this horizon cannot solve yes but I introduced the so-called near harmonic horizon which goes down with one over T rather than