Why does Patrick Dougherty involve the community in creating his sculptures?

a$.$

He is too busy to make them himself.

b$.$

He wishes to keep the sculptures affordable for the patrons who commission them.

c$.$

Community members insist on joining in because it is so much fun.

d$.$

Their locations are so remote that no one would see them otherwise.

e$.$

The pieces are site$-$specific and made collectively in a short amount of time