From the about page: What is "Orion's Arm" you might ask? That is an excellent question, and in a nutshell here is your answer: Orion's Arm is: The next step

From the about page: What is "Orion's Arm" you might ask? That is an excellent question, and in a nutshell here is your answer: Orion's Arm is: The next step in the evolution of science-fiction A collective hard science fiction world building endeavor A space opera A communal background for science fiction stories A universe ready to be brought to life through illustration A forum for cutting edge science A roleplaying setting A transhumanist projection of what the future might look like A bunch of semi-sane sentients having fun together Why are we here? The answer to that question can be found in our Statement of Purpose: Our purpose is to inspire writers, artists and thinkers. To create a vision of the future that is plausible at every level, internally consistent and abides by the accepted facts and theories in the physical, biological, and social sciences. We embrace speculative ideas like Drexlerian assemblers, mind uploading, posthuman intelligence, magnetic monopoles, wormholes and the technologies, and developments that will make all this possible. To quote Arthur C. Clarke's Second Law: The only way to explore the limits of the possible is to venture a little way past them into the impossible. Our task is to create an ever evolving universe that is interesting, inspiring and provocative - to theorize on a future that may, or may not, come to be.