No person who chooses his friends over speaking the truth is a rationalist.

Then rationalists are terribly vicious people.

Once again, we are running into the problem of the term "rational" referring to at least two different concepts.

1. Epistemic rationality: The map should reflect the terroritory. Truth above all else.
2. Instrumental rationality: You should win. My values are such that making my friends happy is a form of winning.