To Mum and Dad for buying me construction kits. To my fantastic
Yorkshire family for endless support, humour, and psychotherapy—
I love you even more than I love triangles. And to triangles and
sheep, for making the world a fascinating place to be.
To David, Mum, Dad, and Carl for their ongoing love and support.
Also in loving memory of Peter Lancaster Walker, an unsung hero
who made so many things possible.