It's the APL/J/K/Fortran model. It fits modern CPU and memory architectures, it fits GPUs, and slow external storage. And rather surprisingly, it always has, e

It's the APL/J/K/Fortran model. It fits modern CPU and memory architectures, it fits GPUs, and slow external storage. And rather surprisingly, it always has, even when memory latency was 1 cycle and there was no prefetch (for which you have to go back to the late 70s). The first APL implementation is from 1962 or so, first Fortran is 1955 or so. R and Numpy use it to deliver their speed while still providing high level semantics.