To celebrate World Digital Preservation Day (29 November), the Scottish Government digital team published its guidance on web archiving.

I’m saddened that public authorities apparently need to be told to do this. Remember the zeroth law of computing: There are two kinds of data: that which has been backed up and that which has not been lost yet. A variant of this is Schofield’s second law.

And remember, there is a difference between a back-up and an archive.