[cowtools]

It does not excuse such a reckless use of industrial equipment around people without appropriate failsafes.

A robotic arm like this not a toy, is a deadly machine with a lot of force and a lot of mass. If you were standing next to it for some reason it could unexpectedly swing around and break your neck in an instant. Engineers should be careful to design such systems with failsafes that account for any action the operator might take.