Given this is rewinding to the 1970s, I expected a mention of CSP [0], or Transputers [1], or systolic arrays [2], or Connection Machines [3], or... The history wasn't quite as one-dimensional as this makes it seem.

[0] https://en.wikipedia.org/wiki/Communicating_sequential_proce...

[1] https://en.wikipedia.org/wiki/Transputer

[2] https://en.wikipedia.org/wiki/Systolic_array

[3] https://en.wikipedia.org/wiki/Connection_Machine