A Few Easy Ones from Raymond Smullyan

[bdfh42]

http://weblog.raganwald.com/2008/05/few-easy-ones-from-raymond-smullyan.html

[edw519]

If my boss saw me on Hacker News for 3 hours trying to solve this puzzle and said, "I forgot to take my Xanax this morning, I never lie, and all the other programmers are working hard, therefore you're fired," would that make him insane?

[raganwald → edw519]

You need a new boss ;-)

[stcredzero]

One of Raymond Smullyan's best contriubtions is his allegory "Planet Without Laughter"

http://www-cs-faculty.stanford.edu/~knuth/smullyan.html

I like things that encourage people to expand and/or examine their world views.