I have a massive (seems like countably infinite) backlog of books that I haven't gotten around to reading, so in moments of mind-death I can pick through the mountain, find an interesting book, and start reading. Many of those books are technical in some sense, so it's not too far-fetched to expect that I'll find an interesting problem somewhere in whatever tome I pick up, which leads to coding.

I highly recommend trolling through used and remainder/overstock book stores. You can usually find some good books for very low prices (around here, they seem to be mostly Dover math books for around CDN $5).

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The hell with paco, vote for Erudil!
:wq