So much ridicule and noise about Amazon and Just Walk Out technology using 1000+ contractors in India to label what shoppers were shopping through video. Well folks, thats how AI/ML works. Its called ground truth and part of training your ML model is to actually have humans validate what your ML model is doing & train it appropriately. AI/ML is not some magic wand out there that just “knows” what to do - it has to be taught, and sometimes it has to be taught for years and years, and the teaching may just never end. In fact, humans should hope that the training AI never ends; the day AI reaches a state where it doesnt need a human to validate ground truth, we are in trouble.