Talking it out beats any tutorial. Same as thinking out loud in real life.

Honestly, couldn't you just leave a torque wrench sitting on his bench with a sticky note?

Worked a summer job at a carnival in my early twenties and this old timer running the ring toss called out my age before I even said hello. He said I had the walk of a 22 year old who just got dumped, which was weirdly true since my girlfriend had broken up with me two days before. I asked if that was some carny trick and he just laughed and said you see enough faces in a season and you start reading people like a book. Funny thing is I can usually guess too now that I'm older, not ages so much but whether somebody is tired or happy or just going through it. Some people just pay attention to other people more than the rest of us do. Your cab driver spent 22 years watching folks in his rearview mirror, that adds up to a lot of faces.