Gather more than 14 people and you have an industry and thats a beautiful contribution to the state of things but a questionable application because the system is running out of contradictions to feed on. 

Take or gather every leaving organism on the face of the earth and define the only thing they have in common? should i introduce the answer as a quiz? No.

Its the ability to move, mobility, its the outreach of the mobilty that defines the impact you finally have. The most common thing is the ultimate commodity. As industry. Run till you can run no more.