The crime which is done now is that war has made a tool and slave of science, and man's knowledge, painfully and laboriously compiled, is made the instrument of man's destruction.
We know that people are less open in conversations if the other conversant puts a cell phone on the table. Even if it's turned off. The sign is enough to close the mind and make a prospective client or lover less likely to do what you ask. As people realize this, they'll start putting away phones or turning them off.