Where a Robot's Gentleness Comes From
■ A robot's manner is a copy of someone's hands
Tsukamukun places things carefully not because an engineer defined carefulness, but because a person took hold of its arm and moved it, again and again. In learning from demonstration, the machine stores successful trajectories, not reasons. The quality of the motion is the quality of the hands that shaped it.
■ Data quality includes the habits of whoever teaches
Careless teaching makes a careless machine. That is a supply problem, not a performance problem. Keep only the clean trajectories and the result is clean; let a rushed afternoon into the set and the rush is learned too.
■ Conclusion: A machine's care is borrowed from people
Hakobukun's realisation moves the credit back to the human side. Teaching is not setup work; it is where quality enters the system. Choosing who demonstrates is choosing what gets learned.
A machine is only as careful as its teacher was.
