To turn a bicycle left, you first steer it right. Only a little, and only for a moment: the wheels slip out to the right, the bike tips over to the left, and then the front wheel follows the lean round the corner. It is called countersteering, and everyone who can ride a bicycle does it every time they turn. Hardly anyone who rides knows. Ask a cyclist how they go left and they will tell you, kindly and with total confidence, that they turn the handlebars left. Their hands have known the right answer since they were seven, and have never once thought to mention it.