Here is some of the knowledge that my schooling didn’t teach me, but that I have found useful or of interest (and have acquired via books, experience and asking people) in later life. Seeing as my ‘core’ is different to your ‘core’, I can only present these as the bits of knowledge that I would have liked school to teach me. You, I suspect, will have your own.
* The motorway network between Bristol, Birmingham, Manchester and London.
* That Africa is a continent and not a country.
* That history was really interesting before they had kings and queens.
* Why you should always choose Easyjet over Ryanair if you have a choice.
* How to stop slugs eating my vegetables.
* Why you should never switch on a light with wet hands.
* That you have to pay to get into Wales but you don’t have to pay to get out.
* That what holds people back is not lack of knowledge, but lack of language.
* The works of Queen and the Undisputed Genius of Freddie Mercury.
* Great American authors of the 20th Century.
* Cash is not profit.
* How to actually speak a foreign language.
* That being ‘clever’ is not the same as being ‘wise’.
* That small babies sleep during the day and not at night.
* That you should check your tyre pressures regularly.
* That if I want to know where somewhere is, I should use a map rather than a sat nav.
* That it’s useful and polite to know (at least some of) the geography, cities and language of a country that I am going to visit.
* That it’s hard to wash tea or chocolate stains out of white t-shirts.
* That the internet eats your time.
* That a lot of the stuff on the internet is just marketing, really.
* That anonymity on the internet tends to unleash the rudeness that lives inside people.
* But that anyway, as Jim Morrison so memorably said, ‘People are strange’.
* That not everything that has value can be counted, and that not everything that can be counted has value.
* That swearing is a lot of fun, which is why adults don’t let children do it.