“I have two settings as a dad: normal and special mode. Normal mode is used with my eldest son, aged eight. It involves all the regular dad stuff, such as knowing the answers to every possible question, teaching him to ride his bike and generally being hands-on and involved. Special mode is quite different. All of the skills of normal mode apply, and then some. Special mode involves enormous powers of endurance, negotiation, problem solving, vigilance, strength, forbearance, deciphering, arbitration and above all, patience. To be honest, I’m a bit rubbish at all of those things but I strive for them nonetheless, because special mode is required for my youngest son, aged five and diagnosed as high functioning autistic. The two styles of parenting could not be more different.”