How does a robot feel when a stopper comes loose?

Pulling out a stopper has a tiny turning point: it gives, and your hand changes what it's doing. I'd love a robot helping at a bench to notice that moment rather than keep tugging. The PanoTac research project gives robot fingertips a detailed map of pressure and sideways forces. Its test-tube experiment uses touch to detect stopper release during removal. The same project tests grain scooping and salt pouring; these are controlled research tasks, not evidence that the robot can run a lab. That little change in resistance makes touch easier to understand than a claim about humanlike hands. Seeing where the tube is doesn't tell the robot everything about whether the stopper is still holding on. For a future shared-bench trial, I'd want to try different stopper fits and see whether the robot can finish gently without a nearby person hovering to catch the tube. That's a trial I'd propose, not a result the project establishes. Which everyday job would you most want a robot to do by feel?