I too was a bit surprised by the assertion, but it doesn't say "ancestry", just "link". And I'm guessing if you include BOOM[1], the links are even deeper. [1

I too was a bit surprised by the assertion, but it doesn't say "ancestry", just "link". And I'm guessing if you include BOOM[1], the links are even deeper. [1] http://boom.cs.berkeley.edu http://boom.cs.berkeley.edu