@DrewDad,
DrewDad, What you are posting is not making me any less skeptical. I want research backed arguments that I can apply reason to.
What you are posting are value judgments. I see no research to back them up (nor do I know a way to make a scientific experiment to test them).
Consider these problems in the argument you posted...
1. The word "deficit" is without question a value judgment. How is this whether a trait is a "deficit" or a "strength" measured scientificially? As the quote you posted noted, some traits listed as "deficits" come in handy if you are in combat.
There is no reason to believe that these traits you label "psychopathic" wouldn't be considered beneficial in a business or a barroom... you certainly haven't provided any research to this affect.
2. What scientific instrument can distinguish between "pathological lying" and normal everyday lying. I have certainly lied for personal gain (in fact I don't think I have ever told a lie without personal gain). And who the heck hasn't feigned friendliness for personal gain?
3. There is also the problem of free will. I have certainly been presented with multiple circumstances where I had to choose between honesty and integrity, or personal gain (i.e. something that I wanted). I don't think I am alone in saying that I have not always acted with integrity. Yet, I have a good productive life with a strong marriage and a strong emotional attachment to my children. The propensity to make to choose integrity or the needs of others over personal desire is a spectrum, not a true/false choice (I would love to see research that contradicted this).
There is nothing here to challenge my suspicion that "psychopathy" is nothing more than a subjective label; an arbitrary line drawn around some of the vast range of human personality types.
There is no research that you have presented to support your assertion that it is best to stay away from "psychopaths".
And... even if you should stay away from these bogeymen... it is highly dubious that you could pick them out from among your co-workers or casual acquaintances.
Of all we have discussed, and all the links I have read (including the ones you have pointed me to) I haven't seen anything to suggest that the word "psychopath" has any value (except maybe to predict recidivism in prison populations).