A friend who works at Amazon made the same point: "We don't really need robots in the FCs urgently [other than the Kivas], because it turns out you can just pay people $17/hour"
Mechanical picking has been too slow. It's not a problem with the robot mechanics. Here's 300 picks/minute from 2012.[1] The parts are all the same, so the vision problem is simple.
But picking arbitrary objects from fulfillment bins is still running at a few picks per minute.[2] As the speed picks up, humans become less necessary.
That's the point of the test condition. When running a robot becomes more economical than paying full-scale humans $17/h, something important about robot abilities will have changed.
I was thinking this week that AI token costs are probably going to get so expensive soon that bright spark CEOs are going to realise “why am I paying for such expensive coding agents when I can pay people from the third world to code!?!” and announce outsourcing like it’s some kind of stunning and innovative revelation.