Yes, of course numpy's heavy-lifting code isn't written in Python. My point was that in comparing numpy to yodelshady's FORTRAN code, we're probably just compa

Yes, of course numpy's heavy-lifting code isn't written in Python. My point was that in comparing numpy to yodelshady's FORTRAN code, we're probably just comparing two different FORTRAN implementations, one much better than the other (perhaps using a different algorithm, perhaps just better optimised).