My wife has her Doctorate in Special Ed, specializing in Autism, as well as her BCBA-D in behavior analysis, again specializing in Autism.
She has been dealing with both children and adults who are on the Autism Spectrum for over 20 years.
I showed this to her, in order to get her professional opinion on it.
She said that while on the surface it might look like a really "cool" thing to do, it shows that this person is fixated on his grandfathers belongings, and the fact that he is drawing every single nail, washer, nut and bolt is not what most people who are not on the Spectrum would do.
I asked her to give me an example that I could understand and she said sure. Remember the movie Rain Man? Dustin Hoffman's charactor Raymond was like this. He fixated on things, like memorizing each and every name, address and phone number in the phone book from A to Z, or being able to memorize every card in a deck.
But normal day to day things, like interacting with people, social skills, and other behaviors were not something Raymond could do. Like have an actual conversation with his brother about the weather, or telling him about his day.
My nephew Jack has Autism. If you tell him to draw a bird, he can't do it unless you show him a picture of a bird. Then he can copy it without having to look at it again. Or, when we play with Playdow, if I ask Jack to make me a dog, he fumbles around, and starts to get very agitated and upset. But if I show him a picture of a dog, he can then make a Playdow dog that almost looks real!!
But he can't comprehend what you just tell him to make. He is fixated on having to see things in order to draw them or make them out of clay.
His latest thing is now listening to and being fixated to music by Beethoven.
He can listen to any melody just once and then he will hum it over and over again, and in perfect pitch and tone.
But if you ask him to make up a song and hum it, he can't. He will get upset and walk away from the table.
This guy drawing his grandfathers things is on the Spectrum for Autism. He may be very high functioning, but he is there.
My wife actually said the idea to give the guy a digital camera to take pictures of his grandfathers things is a good idea.
What he is doing could take years to do, and if they ever have to sell off any of these things, or god forbid, if they move, the guy could possibly become distraught and have anxiety attacks if he can't finish what he started.
Jim