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I’ve spent quite a bit of time pro­cras­ti­nat­ing this week­end, surf­ing the Internet when I should’ve been fin­ish­ing clean­ing my apart­ment. Of course, in addi­tion to total time sinks like Facebook games (Yahoo games for peo­ple who like assist­ing spam­mers), I’ve watched a shit­load of TED talks… So far the most inter­est­ing by far are the Idealab founder who built a mir­rored solar col­lec­tor and this guy:

explain­ing some­thing extremely inter­est­ing (I won’t spoil his punch­line, you’ll have to spend the 18 min­utes on it).