A complete aside.
Do you remember I said yesterday I like diagrams instead of lists of facts (e.g. maps over a list of towns and directions)? Well, check this out on BBC iplayer: it was on last night: The Beauty of Diagrams!
Note: The link will expire on 23 December in the UK. You can’t watch BBC iplayer outside the UK. I’m not sure why iplayer isn’t available on subscription overseas yet: if you’re overseas and would be happy to pay a subscription to see it, PLEASE comment and note how much you’d genuinely be happy to pay per month to access iplayer content. I know there are some restrictions on rights for things like sports and movies but, excluding those even, as a general idea, I’m very interested to know… )