Every ad-tech sales-bro who takes a meeting with an advertising executive finds himself pushing on an open door. Advertisers *desperately* wants to believe in mind-control rays. Think of the department story magnate John Wannamaker, who said, "half my advertising spending is wasted - I just don't know which half." Imagine: some advertising exec convinced John Wannamaker that he was only wasting *half* of his advertising spending!
13/