Think you know how long a second is? Give this a go.
For a lengthier (and infinitely less frustrating) challenge Auditorium is well worth half an hour of your time.
(both via kottke.org)
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Think you know how long a second is? Give this a go.
For a lengthier (and infinitely less frustrating) challenge Auditorium is well worth half an hour of your time.
(both via kottke.org)