Distinguishing characteristics of humans, by Zake Stahl (Human), not prioritized:

 

  1. Consciousness / Pronounced Self-Awareness / Questioning Existence and Purpose - Not that other entities don't have some or all of these characteristics, but there is a blend that is severely human.

  2. Ego - To the point where humans can act unjustifiably superior and can be so selfish as to be detrimental to their own existence.

  3. The brain - A no-brainer <hee hee>; Though obviously many animals have brains, human's are bigger. At least are bigger insofar as the normal mass and size of body to brain ratio. (There are a bunch of other critters with ratios like our, rats for example.)

  4. Introspective Mind. Able to imagine and create previously non-existent things. Has Emotions and Relationships.

  5. Speech - This one seems obvious, communication, history, culture, song. At a mystical levels: vibrations, mantras, Sanskrit, spiritual song, chanting, prayer, etc.
  6. The opposable thumb - Some other primates have this too, and they're basically on the same evolutionary branch. A big chunk of brain is all about the hands and thumb. Our hands are a huge part of learning about our environment and interacting with it and (kinesthetic) learning. (knitting as antidepressant, etc.)

  7. Sweat glands and pores on almost entire skin surface - This makes a huge difference in increased habitat acclimation (and thus diversity of habitat across the species now).

  8. Sexuality:
    1. No bone in the penis - Very convenient and allows for more diverse culture and behaviors. (Don't recall where I heard this one, book?, radio interview? The theory is that this adaptation allows for male humans somehow to multitask and trick females in ways non-humans can't; also just more flexible or something.)
    2. Female humans are not as driven by ovulation as are female animals who go into "heat," in other words, they can culturally/personally/socially choose their sexual behavior regardless of their cycles of menstruation.
    3. In many many species the male is more colorful and decorated, whereas in humans (not all, but enough to be noteworthy) the females seem to take this role. Note also however, that in humans and non-humans alike, the males fight for females, though this is hugely masked and muddied by culture. (I might be biased here.)

  9. Good at sprint and long range and variability (hunting) mobility. - (This one I'm sketchy on and need to find the source.) Something I heard out of the corner of my ear about humans being able to run longer / more varied as the heart rate / breath rate / locomotion stride are not anatomically locked in at some fixed ratios. Whereas in some quadrupeds, for example, there are fixed rations, so they are not as flexible as hunters or evading prey.

  10. Uniquely long adolescence: David Bainbridge postulates that human's prolonged adolescence is unique and a great evolutionary advantages; he wrote, "Teenagers: A Natural History." Somehow the angst and all is required to re-wire the human brain; started 800K years ago and that's when we became who we are now.

  11. Cooked food / cooking food - Richard Wrangham, the author of "Catching Fire: How Cooking Made Us Human" puts forth the argument that cooked food packs more energy per volume of food and per amount of time taken in eating and preparing it, also it allows preservation and portability. He feels this is a critical node on our evolutionary branch and a huge distinguishing characteristics (smaller mouth, teeth, stomach, etc.). (Cooked food vs raw food movement debate - but really both are human, you can process fuel both ways, each with pros and cons; focus on health (go slow food!))

  12. Tool use; actually lots of animals do this. [links] Abstraction. Long term thinking.

  13. Compassionate, though sometimes to help this one along we need Culture and Religion.

Taxomitry:

Domain:
Eukarya
Kingdom:
Animalia
Phylum:
Chordata
Class:
Mammalia
Order:
Primate
Family:
Hominidae
Genus:
Homo
Species:
sapiens

 

Evolution