https://www.cnet.com/news/hololens-2-isnt-meant-for-you-but-hololens-3-might-be/

Next, I was told to get parts from bins around the room. The blue arrow directed me to the bin with the bolt I needed, then the washer to go with it, and then to a table with the right wrench.

Which size bolt? What type of wrench? I didn't need to worry about that, because the HoloLens 2 guided me every step of the way. After about eight minutes, I went from cluelessly looking at a broken ATV to marveling at my first repair job. As Keanu Reeves says in the sci-fi epic The Matrix after getting fighting skills downloaded directly to his brain, "I know kung fu."