Tai Woffinden is a speed king. In 2013 he won the Speedway Grand Prix series to become World Champion. He’s since won it twice more. But you’re more likely to notice the ear-stretchers, and the tattoos that cover 75% of his body. The philosophy of identity has been the subject of unceasing debate since the origin of humankind. If you are so minded, you can read the classical scholarly accounts, including the marathon poem ‘The Odyssey’, understood to have been penned by Homer around the eighth century BC, which, amongst other things, connects with the notion of self.