Before GPS, Persian Merchants Never Got Lost. Here's the Skill They Used That You've Probably Lost Too.
Centuries before satellites or even reliable compasses, Persian and Silk Road traders navigated thousands of miles of desert and mountain with startling accuracy — using mental techniques that modern neuroscientists say actually reshape the brain. The bad news? GPS dependency is quietly undoing that same wiring in all of us. The good news? You can get it back.