It has to do with balancing home life with work on a rotating shift. Getting out of work at 5pm allows time with the family in the evening. Arriving home at 8pm pretty much guarantees you won't see them because you'll be asleep on night shift until right before your shift. Folks prefer 4am over 5am for this reason.
The problem is that you'll start trusting it based on a few examples that it was correct, and you'll be burned by a seemingly correct answer that is really wrong. I tried testing it with simple science and engineering questions and it was garbage.
A 3.75% of the cars total value as a "document fee" is the same as a 3.75% sales tax. The only difference is that you also pay it when you bring in a car from out of state.
There are only a few manufacturers of robotic arms, and have this feature as it is required by law in many countries. This was a new installation and I'll be happy to bet all sorts of money that it had it installed and wasn't used.
There are many ways to do this safely. All robotic arms come with a disable key that powers off the axis motors, latches all the brakes, but leaves the sensors and end of arm tooling powered up to troubleshoot. Troubleshooting can also be done via PC and watching inputs/ outputs on the program.
You are likely very correct. These robots are dumb. They do the same repetitive task over and over to a high degree of precision. Flag a photo eye and it'll start the sequence to pick up a box.
This is either a lock out issue or a design issue and it is irrelevant that it was a robot.
It has to do with balancing home life with work on a rotating shift. Getting out of work at 5pm allows time with the family in the evening. Arriving home at 8pm pretty much guarantees you won't see them because you'll be asleep on night shift until right before your shift. Folks prefer 4am over 5am for this reason.