The comparison in the article was to Universal Robotics, whose arms are low-payload and compliant (ie. not big 'ole position controlled arms of yesteryear). To

The comparison in the article was to Universal Robotics, whose arms are low-payload and compliant (ie. not big 'ole position controlled arms of yesteryear). Toothbrush test generally refers to daily use. But I'm not sure I understand that context outside of mass-market consumers. A well-designed arm for light-manufacturing has 90%+ uptime and is (in fact) used daily.