What a great little book! 'I used to know that' is a well-written primer to all the key factors in history from the dawn of civilization, though does seem to have something of a blind-spot regarding the Far East, only touching upon the most important dates and episodes.
When presented in one novella-length tome though, it's astonishing and quite sobering to see quite how much of human history has been dominated by conflict.
Emma Marriott presents an intriguing glimpse of history in this short book though, with an engaging style and concisely details facts whilst still retaining a whimsy sadly lacking from the majority of history teachers I've had the opportunity to meet.
Very good!