@GoodPersonEffed
1. I think there's a distinction between animals' adaptive behaviours and their conditioned responses to external stimuli, and a human's deceitfulness.
In animals "deceit" is not gratuituous, it serves an evolutionary or survival purpose.
Bottom line, in my opinion, is that humans are capable of, and often engage in, deceit for the sake of deceit, whereas animals use deceit for survival and to gain something, such as a tasty treat.
2. The researcher drew the conclusion that the [primate's] behaviour was based on it having a sense of fairness, but from a scientific point of view, the researcher has not proven that.
3. Hatred must have an object of hate. I think it's safe to say we don't hate things which we love, like, admire, in other words, things that evince qualities which have a positive effect on us.
Since a misanthrope hates humans, it must therefore mean that humans do not posess such qualities as to make themselves worthy of love. Quite the contrary: they display such attributes which trigger dislike and hate.
If there is nothing to hate in humans, the misanthrope's hate is objectless and therefore does not exist. One cannot hate something which does not exist.
@Epsilon0, I am loving this discussion. Thank you for starting it.
In the above quote, I did a bit of rearranging and numbering for ease in communicating.
1. I would argue that deceit is an adaptive evolutionary trait. Some humans deceive for self- or group-protection, while some do it because it is personally rewarding and tastes mighty good to them. I suspect it is an expression of dominance, and on this planet, humans have evolved to become the dominant species.
In The Laws of Emotion, it is posited that the majority of primary emotions exist to prepare us for next actions. When we desire something, and that desire is sated, we seek new stimulation and new desires to satisfy, continually propellng us to next actions, which stimulate growth and advancement. One can get tired of their very favorite food if they have it every day. One can get bored in a rewarding long-term relationship and seek a new one if they don't make a conscious effort to focus on why the relationship is rewarding so that they remain satisfied, if not as stimulated as in the early stages.
The five precepts of Buddhism, the precepts of similar systems of belief, the judeo-christian 10 commandments, and the golden rule of multiple worldwide faiths and schools of philosophy exist to help us get along and be safe for one another. And yet they are difficult to maintain because they inhibit personal and group advancement, which is often achieved at the expense of others (including the deceptions of stealing and lying). Animals steal for survival and reward, such as birds of prey and racoons.
All of this I've written here in this comment leads me to tentatively accept a hypothesis that deception is an adaptive trait that reinforces humans are advanced animals. We're just better at and more conscious of deception because evolution found it a quite useful adaptive trait that works well with and is also recognized by our advanced consciousness.
2. de Waal acknowledges your assertion that he has not proven fairness in animal cognition. It has been argued against academically, and he admits it is a working hypothesis or theory as yet neither definitively proven nor disproven. There are other researchers delving into theories of animal ethics, de Waal is the only one I've personally read, but a Google search of the the term animal ethics shows this is an established field of study. If that had been the point of the original post, I would have delved into it rather than misanthropy and humanism. :) Honestly, I'm just enjoying the intellectual stimulation here; I already had applicable knowledge for some of the ideas raised in this thread, for others I had to go digging. I've thoroughly enjoyed all of it.
3. On reflection, what seems to me to be lacking in the misanthrope is whatever makes us social animals. We are hard-wired to need interpersonal connection, touch, inclusion, acceptance, and reciprocity. Some level of acceptance and forgiveness is required or both the smallest and the largest social groups would fall apart.
Hatred is rejection, and the misanthrope rejects humanity and other humans, yet is not necessarily a hermit removed from society, but often still participating in society, even as s/he rejects and renounces it and/or its members. I wonder, what's up with that?
I get a sense that you're perhaps seeking something admirable and/or morally/ethically justifiable or valuable in the misanthrope, am I misperceiving? I'm not saying it isn't there, but I sense that there is a desire to embrace or defend, and am curious about the motivation.
If the misanthrope is perhaps not a humanist, and has found nothing worthy of motivating a desire for others of his/her own kind, such as love or another complex or even primary emotion, then based on this thread's discussion, which includes deceptiveness, I wonder if misanthropy is also an adaptive trait, and if so, to what benefit? Could it be an evolutionary experiment to see if a new species advancing from homo sapiens would be better equipped to survive and thrive without social support and inclusion? Would they be hetero sapiens?
Also, no trait is ever completely discarded, because it may be useful later. Whale fins have the remnants of leg bones. Some humans have little holes outside their ears from the former trait of gills. Could it be that the misanthropic hate of humanity is vestigial and at some point in the distant past served a necessary purpose for an ancestral species?
And what the heck did the appendix once do?