Thanks. Interesting. So he’s not a diffusionist then?
I never heard of the term but
Everybody knew everything means there was communication and trade between the southwestern cultures.
Distance was no object means the people on the Colorado plateau knew well the people on the Gila river at Phoenix. Ditto the contemporaries in Cahokia far east and those who dwell in the western coastal region of Mexico.
There is no coincidence means that incidence here and there is because was trade and communication
All the above does not mean there were differences.
Lekson likes to take on such terms as diffusion and shred the theory. The reason I like him is his courage and ability to let the air out of academic baloons