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
* Randaly
* shokwave
* Barry Cotter
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:
- The Worst Argument in the World
- That Alien Message
- How to Convince Me that 2 + 2 = 3
- Lawful Uncertainty
- Your Intuitions are Not Magic
- The Planning Fallacy
- The Apologist and the Revolutionary
- 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
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!
Once a post gets over 500 comments, the site stops showing them all by default. If this post has 500 comments and you have 20 karma, please do start the next welcome post; a new post is a good perennial way to encourage newcomers and lurkers to introduce themselves. (Step-by-step, foolproof instructions here; takes <180seconds.)
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, a big thank you to everyone that helped write this post via its predecessors!
I think to an extent, physics is more intellectually satisfying to a lot of smart people. It's much easier to prove things for definite in maths and physics. You can take a test and get right answers, and be sure of your right answers, so when you're sufficiently smart it feels like a lot of fun to go around proving things and being sure of yourself. It feels much less satisfying to debate about which economics theories might be better.
Knowing proven facts about high level physics makes you feel like an initiate into the inner circles of secret powerful knowledge, knowing a bunch about different theories of politics (especially at first) just makes you feel confused. So if you're really smart, 'hard' sciences can feel more fun. I know I certainly enjoy learning computer science and feeling the rush of vague superiority when I fix someone's computer for them (and the rush of triumph when my code finally compiles). When I attempt to fix people's sociological opinions for them, there's no rush of vague superiority, just a feeling of intense frustration and a deeply felt desire to bang my head against the wall.
Then there's the Ancient Greek cultural thing where sitting around thinking very hard is obviously superior to going out and doing things - cool people sit inside their mansions and think, leaving your house and mucking around in the real world actually doing things is for peasants - which has somehow survived to this day. The real world is dirty and messy and contains annoying things that mess up your beautiful neat theories. Making a beautiful theory of how mechanics works is very satisfying. Trying to actually use the theory to build a bridge when you have budget constraints and a really big river is frustrating. Trying to apply our built up knowledge about small things (molecules) to bigger things (cells) to even bigger things (brains) to REALLY BIG AND COMPLICATED things (lots and lots of brains together, eg a society) is really intensely frustrating. And the intense frustration and higher difficulty (more difficult to do it right, anyway) means there's more failure and less conclusive results / slower progress, which leads some people to write off social science as a whole. The rewarding rush of success when your beautifully engineered bridge looks shiny and finished is not something you really get in the social sciences, because it will be a very long time before someone feels the rewarding rush of success that their beautiful preference-satisfying society is shiny and perfect.
I do think that the natural sciences are hopelessly lost without the social sciences, but for most super-clever people, is studying natural science more fun than doing social science? Definitely - I mean, while the politics students are busy reading books and banging their heads against walls and yelling at each other, physics students are putting liquid nitrogen in barrels of ping pong balls so that the whole thing explodes! (I loved chemistry in secondary school for years, right up until I finally caught on that coloured flames were the closest we were going to get to scorching our eyebrows off. Something about health and safety, thirteen year olds, and fire. I wish I hadn't stopped loving chemistry, because I hear once you're at university they do actually let you set things on fire sometimes.)
I don't think that something being (more) mathematically rigorous explains all of what we see. Physicists at one time used to study fluid dynamics. Rayleigh, Kelvin, Stokes, Heisenberg, etc., all have published in the field. You can do quite a lot mathematically in fluids, and I have felt like part of some inner circle because of what I know about fluid dynamics.
Now the field has been basically displaced by quantum mechanics, and it's usually not considered part of "physics" in some sense, and is less popular than I think you might expect if a su... (read more)