Not only one developer. Rob Pike, Ken Thompson and Russ Cox were fundamental in Plan 9. The early versions of Go's standard library were very based on ideas tak

Not only one developer. Rob Pike, Ken Thompson and Russ Cox were fundamental in Plan 9. The early versions of Go's standard library were very based on ideas taken from Plan 9 and Inferno, and even the compilers were very similar. Although it would be wrong to consider Go as a derived product of Plan 9, I think it is right to call it its intellectual successor (although not the only one).