I believe being polytropic gives people opportunities of many sorts which are not accessible to people who are monotropic. Developmentally typical children are flexibly able to recognise and exploit opportunities that may pass monotropic children by. Among those missed opportunities are chances to contribute to a common interest, which is at the heart of inclusion (Bailey 1998). While polytropic children will swiftly find out how comfortably to cohabit in shared opportunity space, it may take a monotropic child far longer even to identify distinct cohabitants – let alone figure out how to fit in with them (D.K.C. Murray, personal communication, 21 April 2006).