Uhh, R is not from 1976, S is - as you note from your footnotes. There's a direct and strong lineage, but they're not the same. As someone who remembers when

Uhh, R is not from 1976, S is - as you note from your footnotes. There's a direct and strong lineage, but they're not the same. As someone who remembers when version 1.0 of R was released, I can say pretty confidently that it was well after 1976 :)