Black-print version for lighter Comfort Colors® 1717 shirts.
It is a joke with a professional point behind it.
GPS is one of the most capable navigation sources ever built. Treating any single source as unquestionable truth is where the joke starts.
Only Amateurs Use GPS is for navigators who cross-check the answer, understand the system underneath it, and keep judgment in the loop. The independent source depends on the platform and situation. The habit does not.
.: Heavyweight fabric (6.1 oz/yd² (206.8 g/m²)) .: Relaxed fit .: Pre-shrunk 100% ring-spun US cotton .: Sewn-in label
