I'm not sure I'm a rationalist though, as I believe there are some lies that should be maintained rather than destroyed.
Can you tell me more about this? this statement piqued my curiosity, but I don't know enough about what you meant to ask anything specific, so I'm left with vauge questions like "Which lies?" and "Under which circumstances?"
It's a qualification on me, I've decided to join the discussion but I'm not sure about joining the group. In other words, statements from me shouldn't be viewed as rationalist statements since I'm (probably) not one. let me expand;
Some lies are worth preserving, I think a rationalist would be in favor of keeping works of fiction for example. We all know that Hamlet isn't real. These sorts of lies aren't what I was talking about, since they are not destroyed by the truth. Pointing out that Hamlet is fiction doesn't diminish its value or effectiveness.
I was mainly thinking of "polite" lies that happen in everyday situations;
The truth in these situations would be very revealing, in a world were everyone could instantly know the truth of all statements, these would be destroyed, instantly. We'd know the truth, yet I feel we would not be better off for it.
Then there are lies like "You're a good boy."
More of a wish than a truth. Yet by lying in this way, a parent is hoping to cause it to become true.
A kind of self fulfilling prophecy (they hope).
Those are also lies I think are worth preserving.
Then there are the lies like "Santa Clause is a real person who will bring you presents if you're good." I think destroying this kind of lie would be a good thing, but I'm not certain.
Would you kindly http://lesswrong.com/lw/nu/taboo_your_words and try posting again? I think that many individuals that describe themselves as rationalists would be in favor of "white lies" and I'm confused as to why you perceive this as a big difference between yourself and the group.
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