Extra thanks to Steve Vogel for including the KDU in his first book. The book is an amazing overview of the current state of global street wear culture. I recommend getting your own copy here.

I leave you with this very well put thought:

A keystone species; is a species that has a disproportionate effect on its environment relative to its abundance. Such an organism plays a role in its ecosystem that is analogous to the role of a keystone in an arch. While the keystone feels the least pressure of any of the stones in an arch, the arch still collapses without it. Similarly, an ecosystem may experience a dramatic shift if a keystone species is removed, even though that species was a small part of the ecosystem by measures of biomass or productivity. It has become a very popular concept in conservation biology.