Comment by nine_k

All memory is uniform, for instance. There is one scalar data processing unit that finishes a previous operation and then issues the next: no way to naturally describe SIMD, for instance. No way to speak about asynchronous things that happen on a Cell CPU all the time, as much as I can judge. (I never programmed it, but I remember that people who did said they had to use assembly extensively.)

OTOH you can write stuff like `*src++ = *dst++`, and it would neatly compile into something like `movb (R1)+, (R2)+`, a single opcode on a PDP-11.