[kaonwarb]

Not that it necessarily applies here, but as a heuristic: https://en.wikipedia.org/wiki/Lindy_effect

[ororroro]

Interesting point. My understanding of Mercury is that it is hard carried by Zoltan so it has a bus factor of 1.

[zeafoamrun]

I always understood it was a teaching language for students who wanted to get programming language implementation experience.