The pocket diary: A great Renaissance invention

The other day Kate Morant, author of the interesting Halley’s Log Blog, tweeted the following question on my twitter stream:

Help! My iPhone diary’s become corrupted. By month ok, but by list all the apptmts randomly reassigned to diff dates. Any tips?

Being the friendly and helpful chap that I am, I tweeted back:

Buy a pocket diary (a great Renaissance invention) and a pencil.

Now I have already written about the origins of the pencil, another great Renaissance invention, in an earlier post so I thought it would be nice to write something about the scientific origins of the pocket diary.

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About thonyc

Aging freak who fell in love with the history of science and now resides mostly in the 16th century.
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