I know this has been discussed before but it deserves a top-level post.

We need to think about categories of lies. Some of them will not help us believe the truth.

I've long felt that I can avoid lying better than most because I'm good at finding things that are technically true, and make people feel good, without denying the truths that are uncomfortable.

This logic also suggests we benefit from spending time in groups where convenient things to say are different.