Here's the new thread for posting quotes, with the usual rules:
- Please post all quotes separately, so that they can be voted up/down separately. (If they are strongly related, reply to your own comments. If strongly ordered, then go ahead and post them together.)
- Do not quote yourself.
- Do not quote comments/posts on LW/OB.
- No more than 5 quotes per person per monthly thread, please.
I believe this was the point EY was trying to make in Archimedes's Chronophone. In short, it's a lot harder to send advice to the past when you can only transmit your justification for believing the advice. If your true reason for holding your "enlightened" views is because they're popular, then the recipients on the other side will only hear that they should do whatever practice was popular for them.