Interesting Links

• Go Fix Yourself!
• A new compendium of cranks
• An old compendium of cranks
• Are you a crank?
• A skeptical guide to the universe.
• Some motivation à la Murphy
• The dictionary of obscure sorrows.
• Physicist and plasma zen master Daisuke Shiraki seriously wrecking a piano
• Robert J. Lang's page on the mathematics of origami

Interesting Prose

• Eliezer Yudkowsky's Guide to Words
• Villon's straight tip on the booze and blowens.
• An existential essay by Derek Parfit
• Brandon Carter's article on numerical coincidences and anthropics.
• Scott Aaronson's attempt to address what's the largest number?

Interesting Weblogs

• Scott Alexander's hyper-rationalist Slate Star Codex blog
• Jerry Coyne's why evolution is true blog (which covers far more than it's name might imply).
• Sean Carroll's physics blog
• Peter Woit's not even wrong page
• Terence Tao's math blog
• Scott Aaronson's Shtetl-Optimized page
• Cosma Shalizi's research and personal page
• John Baez's website
• How to succeed in life according to my former professor Mike Develin
• Prashant Athavale's weblog tutorial on image processing for "noobs"

Interesting Theorems

• Godel's incompleteness theorems
• Fitch's paradox of knowability
• Benford's law of scale-invariance
• A list of unsolved problems in mathematics
• Max Tegmarks mathematical universe
• Stanislaw Ulam's prime spiral
• The possibly undecidable Ulam/Collatz/Kakutani HOTPO conjecture
• Some quite remarkable properties of the square root of two
• Some equally remarkable formulae for the ratio of the circumference of a circle to its diameter
• The Gauss-Bonnet theorem linking geometry and topology
• The Banach-Tarski paradox
• Turing's Entscheidungsproblem
• The subtle and beautiful Hahn-Banach theorem
• Wilczek and Gross' result that nonabelian gauge theories are asymptotically free
• The vacuum is polarized
• Zeckendorf's theorem

Puzzles and Games

• Classic archived New York Times crossword puzzles
• Project Euler numerical challenges
• Harvard's daily Putnam problem
• The compendium of Putnam problems
• LA Times daily crossword puzzles
• Mike Develin's daily word game
• A hard travel IQ game

Music

• A whole host of hard guitar pieces by the inimitable Ted Greene