Since sharing his own autism diagnosis with the world, Chris Packham has been flooded with letters and emails from other autistic people, frustrated that the people in their lives, their friends, families and co-workers, don't understand them.

Since sharing his own autism diagnosis with the world, Chris Packham has been flooded with letters and emails from other autistic people, frustrated that the people in their lives, their friends, families and co-workers, don't understand them.