alt Hacker NewsWikipedia says Alef lacked garbage collection, contributing to it being abandoned.
But does Limbo have any 'fatal flaws' like that? Especially compared to Go.
No doubt Rob Pike is a prolific and capable programmer. But seems like he needed quite a few attempts before arriving at Go (looking at C's flaws -> Alef -> Limbo -> Go, Wikipedia also mentions a domain-specific language called Sawzall).
Which is another proof, that the professional experience of the UNIX idols, has shaped why Go, and not C all the way.