This is not a written rule but is one many Tesla employees follow to the letter. Elon Musk is so infamous for impulsively firing Tesla workers at random that one manager forbade his workers from walking close to his desk whenever he is around.
Strangely enough, you do not need to commit a blunder to become Elon’s next victim. Answering an unplanned or unclear question wrongly is enough to send you back to the job market.
Some employees talked about one unfortunate engineer who was fired after finding himself at the receiving end of Musk’s tirade sometime in October 2017. The engineer was going about his business at Tesla’s Gigafactory in Nevada when a colleague told him Elon wanted to see him.
The engineer walked up to Elon who shouted at him about something that was not working. The engineer was unsure if Elon was talking about a tool or a robot. Elon Musk ignored his questions and kept using the f-word while asking if he “did it”.