Reflecting on 20 years in business, I thought I’d post about what I’ve learnt in that time and this would be my number one. In my favourite business book “Good to Great” by Jim Collins, it Is called the Hedgehog Concept. That comes from a Greek parable:“The fox knows many things but the hedgehog knows one big thing”. The fox tries everything to get the hedgehog, sneaking up on him, moving fast,...