Until someone opens the box, nobody knows what’s inside. Body language training claims to know anyway. Here is the three-box problem and what it holds up instead.

Plato's prisoners mistook shadows for the world. Most interview and interrogation training does the same thing — 1950s confrontation repackaged as "non-accusatory" and "research-based." Here's how to tell the difference and why the upgrade to science-based interviewing is worth your training dollars.