A few notes about the site mechanics
A few notes about the community
If English is not your first language, don't let that make you afraid to post or comment. You can get English help on Discussion- or Main-level posts by sending a PM to one of the following users (use the "send message" link on the upper right of their user page). Either put the text of the post in the PM, or just say that you'd like English help and you'll get a response with an email address.
* Normal_Anomaly
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A note for theists: you will find the Less Wrong community to be predominantly atheist, though not completely so, and most of us are genuinely respectful of religious people who keep the usual community norms. It's worth saying that we might think religion is off-topic in some places where you think it's on-topic, so be thoughtful about where and how you start explicitly talking about it; some of us are happy to talk about religion, some of us aren't interested. Bear in mind that many of us really, truly have given full consideration to theistic claims and found them to be false, so starting with the most common arguments is pretty likely just to annoy people. Anyhow, it's absolutely OK to mention that you're religious in your welcome post and to invite a discussion there.
A list of some posts that are pretty awesome
I recommend the major sequences to everybody, but I realize how daunting they look at first. So for purposes of immediate gratification, the following posts are particularly interesting/illuminating/provocative and don't require any previous reading:
- Your Intuitions are Not Magic
- The Apologist and the Revolutionary
- How to Convince Me that 2 + 2 = 3
- Lawful Uncertainty
- The Planning Fallacy
- Scope Insensitivity
- The Allais Paradox (with two followups)
- We Change Our Minds Less Often Than We Think
- The Least Convenient Possible World
- The Third Alternative
- The Domain of Your Utility Function
- Newcomb's Problem and Regret of Rationality
- The True Prisoner's Dilemma
- The Tragedy of Group Selectionism
- Policy Debates Should Not Appear One-Sided
- That Alien Message
- The Worst Argument in the World
More suggestions are welcome! Or just check out the top-rated posts from the history of Less Wrong. Most posts at +50 or more are well worth your time.
Welcome to Less Wrong, and we look forward to hearing from you throughout the site!
Note from orthonormal: MBlume and other contributors wrote the original version of this welcome post, and I've edited it a fair bit. If there's anything I should add or update on this post (especially broken links), please send me a private message—I may not notice a comment on the post. Finally, once this gets past 500 comments, anyone is welcome to copy and edit this intro to start the next welcome thread.
Well, not, that's not Kant's justification!
Why would a rational agent choose unhappiness?
Yes, but that wouldn't count as ethics. You wouldn't want a Universal Law that one guy gets the harem, and everyone else is a slave, because you wouldn't want to be a slave, and you probably would be. This is brought out in Rawls' version of Kantian ethics: you pretend to yourself that you are behind a veil that prevents you knowing what role in society you are going to have, and choose rules that you would want to have if you were to enter society at random.
You don't have object-level stuff like ice cream or paperclips in your axioms (maxims), you have abstract stuff, like the Categorical Imperative. You then arrive at object level ethics by plugging in details of actual circumstances and values. These will vary, but not in an arbitrary way, as is the disadvantage of anything-goes relativism.
The idea is that things like the CI have rational appeal.
Rational agents will converge on a number of things because they are rational. None of them will think 2+2-=5.
If there are a lot of similar agents in similar positions, Kantian ethics works, no matter what their goals. For example, theft may appear to have positive expected value - assuming you're selfish - but it has positive expected value for lots of people, and if they all stole the economy would collapse.
OTOH, if you are in an unusual position, the Categorical... (read more)