Thank you for being so open and sharing, I truly appreciate your input and insight from personal experience.I think it would depend on if this was a planned suicide or not. This is just my opinion from my own attempts. I’ve attempted three times without planning, impulsive attempts that were in my immediate area. The one planned attempt was actually out of the way, two states away from my main family. That was actually my hanging attempt, chosen because it was isolated and I thought no one would find me. We’ll never know for certain, but maybe BCJD thought the same.
I have autism, as does my sister. I was pretty outgoing as a baby, but my sister was withdrawn per our mother. She didn’t cry a lot, was a late speaker, didn’t make friends easy. Maybe that is what he meant? Some people with autism show signs as a baby.
I don't think we can ever say what was in his heart, what brought him there and why he chose this particular path. Just that it had been something he had been thinking about for over a year and I would surmise it was planned rather than spontaneous.
That description of your sister was the kind of personality traits I was imagining yes. I know you had previously speculated on something he may have suffered from (sorry I forget the name) which may explain his desire to end his life before becoming violent. My question is really how noticeable would this be to his family and friends? Would it even be diagnosed in 1975...he seemed pretty certain a psychiatrist would be able to tell his folks what was wrong with him didn't he. He said he didn't want to live his life under care, trying to change his personality (paraphrasing again), does this suggest he had been under a doctor?
And finally, what effect might drugs have on whatever he was suffering do you think?