This article was half-discussed in another related HN discussion today:

https://news.ycombinator.com/item?id=30812746 - Re-Reading Tanenbaum’s Critique of RPC 30 Years Later by John Day (2018)

However, most of the comments were not about Tanenbaum's original paper so I felt this was worth submitting on its own. One prior discussion on the paper proper found via the past link:

https://news.ycombinator.com/item?id=10029202 - Aug 9, 2015 (13 comments)

It's a great read.

RPC like blocking IO is an inadequate pretence.