I see some problems with the said "5 of the 9 features" when employed for a different generations, 20 years apart. The concepts there are not fixed but change constantly and that may alter the final result as, for instance, something that would be considered a "sleep problem" today would not be considered a sleep problem back then.
Some examples, as I find it easier to explain what I'm talking about using those:
"depressive mood" - The nineties were the age of grunge music. Alice in Chains, Pearl Jam "sad phase",...
This is a very important post to read concerning Bitcoin "billionaires", from one of the guys who helped code its software:
Not as rich as you think… - http://gavinandresen.ninja/not-as-many-as-you-think
It goes like this:
People assume that the people who worked on Bitcoin in the early years are fabulously wealthy.
That’s a bad assumption, for lots of reasons: