[LaPingvino]

There are several points where he won't mention the language. Which languages do you think he meant?

[catwell]

Probably C++ or Java (Go was written to replace them at Google).

[slowmovintarget]

The first mention sounded like C++. For verbosity (second mention), I'd guess Java. The third mention sounded like JavaScript where he said something to the effect of unexpected tangling, but those are guesses based on what Google uses and Rob's brief description.

[systems]

Perl6

[f2f]

COBOL.

[dmux]

Wrong. He is most definitely talking about Perl.

[bjwbell]

Wrong C++. maybe that's why he didn't say, it's all of them (for an approximate value of all).

[weitzj]

Rust

[pcwalton]

How about asking him, instead of speculating here?

[jinst8gmi]

Go