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.