I'm 64, I've been working on vehicles since I was around 6 or 7 years old when I was watching my father tuning up a 1955 Chevy, he looked at me and said you've watched me do this many times can you put the contact points in the distributor?, I was scare to say yes in case I messed it up but was more scared to say no...so I said yes, so he sat me on top of the engine and watched me replace the points and adjust them to the proper gap with a thickness gauge..A.K.A. a "feeler gauge" because you had to "feel" the friction to know when it was correct....he put me down after I was finished and said go hit the ignition....that 265 V8 fired right up and I was strutting around like a rooster, after that I have never stopped working on vehicles!!!

That being said I have never had anyone ever work on my family's or my own vehicles.