I can imagine lots of ways in which the world would be different if a superpowerful superbeing was around with the ability and will to shape reality for whatever purpose
Looking at your examples, they all seem to boil down to "things that violate this-world!ArisKatsaris's intuitions about how the world works". If you lived in a world were any of the things you described in your comment occurred you wouldn't be impressed by them. To adapt the post I linked to: If you demand miracles, miracles won't convince you.
If you lived in a world where any of the things you described in your comment occurred you wouldn't be impressed by them.
What does being "impressed" have to do with anything? I'm talking about believing in someone's existence.
I don't deny the existence of the Pope. I don't deny the existence of the American President. I'm not impressed by either but I don't deny them. I don't deny the past existence of dinosaurs. I don't even deny the existence of King David and Agamemnon as historical figures. I make fun of the people who deny the existence...
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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:
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.