Even the brilliant mind of Leonardo da Vinci needed to jot things down in a notebook so he could remember what he needed to do. The only difference, of course, is that da Vinci's to-do list was much more complex than ours. I mean, who needs to calculate the measurement of Milan and its suburbs
and learn how to repair a lock, canal and mill?
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Source: http://feeds.gawker.com/~r/gizmodo/full/~3/TKEz7JzNGaQ/this-is-what-leonardo-da-vincis-to+do-list-looked-like-in-1490
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