I think as was stated very succinctly above, it's all very complex. It's not like 1 + 1 = 2 kind of formulation. There are so many mitigating factors.
I had severe head trauma and was in a coma for a month. I wasn't expected to survive. In those days, Vietnam, they didn't really know what to call things like that. Now it's called TBI. I don't know if the fact that it's a group heading for a series of injuries makes it any better for those that are diagnosed with it. I also have PTSD.
On the positive side of things and to answer FoP's questions as well; with everything I went on to college, got a master degree went back to school at 50 got a degree in computer programming. Worked in construction, office and more jobs than I care to remember. Been married 43 years , in essence, I've made a life for myself. Was it easy? No. But it would have been difficult no matter what happened to me or where I was. What happened and the stuff that I've dealt with over a lifetime made it more difficult but you can have goals and dreams and get some of them. Don't spend too much time with Dr. Google, if you take my meaning. It's good to understand what's going on but too much info is just that, too much.
Everyday is a continuing struggle for existence. We just have a couple more layer of shit to deal with. Try not to let that hold you back. This is the only time that I'm sure I have, I want to do the best I can with it. I hope you can as well. As always, let me know how I can help.
Jar