Hashlife is impressive, but don't misread the above comment as saying it is "the" right way of doing it. Hashlife is good if there is lots of repetition (or sp

Hashlife is impressive, but don't misread the above comment as saying it is "the" right way of doing it. Hashlife is good if there is lots of repetition (or sparseness). There are many other optimisation strategies, with different trade-offs.