Feckless Aspie, Clueless Sociopath

From a comment in response to the question of why do aspie's come across so much better than sociopaths do:

I can see a few reasons.

The aspie comes off as feckless; he can't help it. 

There are a few ways the sociopath can blow it. 

1) He doesn't anticipate the disgust. E.g. an American in Thailand might pat a kid on the head. Similarly, I might remark to a mother/daughter pair, "it is amazing to think that she came out of you," because I just don't have the same feelings about things. Observers think, "the sociopath is disgusting."

2) He acts charming to get something. Then he takes it, impulsively, when the opportunity appears. Feelings of betrayal and hatred arise in the victim and observers, because the victim thinks, "he could & should have kept doing what I liked. He shouldn't have betrayed me." If you asked the sociopath why he deceived, he might say, "I gave the person what he wanted. Later, I saw an opportunity to take what I wanted, and I did."

3) The sociopath gets irritated by a person. There's stimulus -> rage -> plotting/scheming. The sociopath mostly thinks. He doesn't experience his feelings much. His response is to "act" either by doing something or thinking about what to do; it isn't to experience the feelings, question the feelings, question the assessment of the situation that led to the feelings. The sociopath might build weapons (or the equivalent) and stash them, anticipating a conflict; that's a way to "let off steam" by taking action. 

Finally, in response to a trigger, the sociopath lashes out and executes a plan, perhaps using preplanned elements. Outside observers see the sociopath as being impulsive, vicious, premeditated and overreacting. 

Feelings of horror or fear arise in observers and they decide the sociopath is very frightening, extreme and beyond redemption. It doesn't help that when they interview the sociopath after the stuff, he'll probably sound quite unemotional; observers will translate that into, "he not human."