You mean the usual documents that get thrown into generics discussions, where he keeps talking about C++ and Java, while ignoring all other programming languages designed since CLU and ML in the 70's?
"In retrospect, we were biased too much by experience with C++ without concepts and Java generics. We would have been well-served to spend more time with CLU and C++ concepts earlier."
https://go.googlesource.com/proposal/+/master/design/go2draf...