good" is socially defined (that which is "good" is basically an agreement amungs the memebers of a group) and since humanity has needed to work in groups to survive, we see that behaviours that promote the group and thus survival become "good". There is a certian level of instinct at play if we compare basic behaviors of humans to other social animals (or even mother-offspring behaviors of many species).
True, but just as colour vision is more primitive in most species, so is understanding of "good" and "evil". That the recognition of the characteristics of human nature co-eveolved with human nature is not surprising.
The "group benefit" theory does not explain why middle class whites were willing to die in civil rights demonstrations, for example, or why people renounce lucrative careers to go help in the third world.
The behaviors came first, the labels came after.
Can't think of ANYTHING that this isn't true of.
The most important point of perspective is that people do not go about thinking they are doing "evil", from each individual's or group's perspective they are doing "good".
Yes and no. While it is true that almost all people try to rationalize their behaviour, no matter how vile it is, the fact is that it is not uncommon for people to look back on their actions, recognize that they were "bad' at that point in their lives and try to atone for their past misdeeds, often without any outside coercion. I'd find this hard to explain without recourse to the ideas of "Good" and "Bad".
As has been stated already, the terms carry no real meaning but merely reflect one's perspective.
It has been stated, yes, but without substantiation in my opinion. I submit that the extermination of the Jews is universally agreed to be an act of evil, and is not just a matter of perspective, notwithstanding that there are a few who will try to excuse it to justify their own hatred of Jews.
There are groups of people who believe that they were abducted by aliens, others who believe that they have been possessed by the devil, more than a few who believe that every word in the Bible is true and some who think it's OK to rape a woman because hse's wearing provocative clothing. Just because they think it, doesn't make it true.
We all have our own perspective, but some perspectives are just f*cked up, pure and simple.