[eternalban]

> Computer memory is mutable. For multiple processors to make use of the same memory requires contending for that memory somehow (else the processors are not communicating in any meaningful way).

That's a bit of a strawman. For example, content addressable memory and message passing will certainly permit "processors ... communicating in [a] meaningful way".

[colanderman]

That's why I called out message passing specifically in the very next paragraph.