An example of human API would be when:
A. friends dress up in funky disco clothes and go out on the town to
various dance clubs.
B. people use social media to plan a seemingly instantaneous dance
party in a grocery store.
C. a sculptor uses social media to show the progress of her work,
then asks for and uses audience input.
D. two people work on a painting together in the same studio and
invite an audience to observe.