Questioning was a different skill now.
When he was still a cop, you flashed the badge and people started talking. Even if they were lying, or evasive, at least their lips were moving and you could get something out of them. Of course, there were always the idiots who got their cues from TV and the movies, echoing, “You won’t get nuthin’ from me, copper,” since Jimmy Cagney first sneered into a camera, or its modern counterpart, “I want a lawyer.” They always said, “I know my rights,” but usually they didn’t. They panicked and gabbled, or they shut up about the wrong things and talked more than they realized. The last generation of gang members he’d had to deal with before resigning, the “fuck the po-po” people, they were so focused on posing for their mug shot that it occupied most of their attention budget for the day and then they’d talk without even realizing it. It’s a truism that the vast majority of criminals are not too bright. For every Moriarty, there’s an army of guys who use Velcro shoes because laces are too challenging.