How to explain the direction of time

Abstract Reichenbach explains temporally asymmetric phenomena by appeal to entropy and ‘branch structure’. He why the entropic gradients of isolated subsystems are oriented towards future not past, we have records past future, fact that universe is currently on a long upgrade with branch off become quasi-isolated. Reichenbach’s approach has been criticised for relying too closely entropy. The more popular nowadays instead particular low-entropy initial state—Albert’s ‘Past Hypothesis’. I’ll argue this neglect unwarranted. A Reichenbachian account important advantages over Albert’s: it correctly identifies minimal posit needed derive key asymmetries offers adequate record asymmetry. While needs be supplemented, provides right foundations explaining what might ultimately mean ‘the direction time’.