BIO 358 1 Flashcards
entire human story
1.8 million years
are humans unique among all animals on earth
- we are objectively unique
- ecological dominant- extent and individual animal controls on environment
- we use a lot more energy
- ex. utilizing the earths landscapes to produce food, entertainment for us
- we “own the place”
- we live in every ecosystem
- evolved rapidly, explosively
rapid and explosive evolution
- chimps and humans diverge at the same time
- humans become different in an explosive hurry in comparison
reductionist pyramid
- each level of the pyramid emerges from the last
- not all parts of the level below are relevant to the one above
- each level is just as simple as another
- all the complexity has a simple explanation
non-human animal society
- individual conflicts of interest determine animal social behavior toward non-family members (non-kin)
- all animals have conflict of interest
- social cooperation is limited by conflict of interest -> bc cooperation is restricted to kin (family)
human animal society
- we control conflict of interest
- this allows us to cooperative
- dramatic change from non-human animal society
- social coercion theory
- humans are first to evolve control of individual conflicts of interest
- we ostracize people who against people who dont cooperate
- use the mutual threat of violence to avoid violence
social coercion theory
use coercive threat in order to manage conflict of interest in order to cooperate
- inexpensive social coercive threat emerged with humans
- emerge explosively after law enforcement
non-human animal restricted by conflict of interest example
- rogue males on the loose ready to take control of other kins
- invading male will kill any cubs not in his kin
- invading male will mate with the female of the group he invaded and start a new kin
- non-kin- conflict
- kin- cooperation
“private” domain
- same for non-humans and humans
- lion pride is controlled by kin ship like how we value our families
“public” domain
- non-kin
- for non-humans there is extreme violence
- for humans we cooperate still
how are humans different
- systematically suppress competitive behavior
- allows evolution of non-kin cooperative behavior
- revolutionary new management of the conflict of interest problem -> coercive suppression of conflict of interest- law enforcement
- elite throwing
- social coercion theory
the history of human knowledge enterprise tells use that the only viable explanations are scientific theories
- newtons laws
- all the complexity has a simple explanation
- test of falsifiable theories will tell you if its true
- theory should be able to be written on the front of the t-shirt
- does it make testable predictions
phylogenetic analysis
- allows us to study species
- how does it change overtime
- when a geographical barrier is introduced it creates two populations that no longer mate -> new species evolves to their environment through natural selection
- two populations accumulate genetic difference
- if a geographical barrier is removed -> two populations reunited
- test falsifiable predictions
- obtain information from common ancestors -> ancestral cat and ancestral ape -> look into their common ancestor
speciation
- two populations diverge from a common ancestor
- they evolve so differently that they can no longer mate
- ex. humans and apes
spread of cultural information
- control of conflicts of interest allows for exchange of cultural information
- creating the speaking, pedagogical, cultural, ethical, and economic animal (trading)
- we are able to trade stuff by suppressing theft and unfair trade
- this communication is allowed bc we have non-kin cooperation and we are able to *punish liars -> truthful cultural spread
- we have a much larger cultural stream than non-human culture
ecological dominance
- extent to which a species controls the resources of an ecosystem for its own uses,
- generally at the expense of members of other species within the same ecosystem
language
- highly evolved capacity of humans to exchange information using spoken and gestural symbols
- extensive semantic content
- elaborate compositional rules
- phonology- meaningless short sound segments
- morphology- combining phonological elements to make meaningful words
- syntax- combining words into complex sentences
- capable of producing effectively infinite number of sentences expressing a nearly infinite number of thoughts, ideas, and pictures
- generative
chimps
- one of two african great ape species that are our closest surviving relatives
- Pan troglodytes
- the other ape most closely related to us is bonobo or pygmy chimp
social coercion theory
States that unique access to inexpensive conjoint coercive threat
allowed humans to enforce and evolve vastly expanded social cooperation leading to our unique biological properties (language, cognitive virtuosity, ethical psychology)
and the details of our 2 million year history.
phylogenetic analysis
- assessment of the likely behavior, morphology or other property of an extinct ancestry based on the corresponding properties in currently surviving descendants of that ancestor
- ex. use the properties of the 4 surviving great ape species to infer the properties of the last common ancestor
- contributes to our understanding of what happened to our more recent ancestors after the last common ancestor
phylogenetic trees
- convenient way of graphically representing the results of phylogenetic analysis
- depicts relationships of organisms at any one time by explicitly representing their descent from older species
primate
- group of related mammalian species which includes humans, apes, and monkeys
- all share a set of adaptations they originally inherited from a common ancestor:
- grasping, five-fingered hands and feet (grasping feet have been lost in humans since we diverged from the other apes.)
- high quality color binocular vision
great apes
- group of living animals descended from relatively recent common ancestor
- there are 4 african great apes: gorilla, chimps, bonobos, and humans
- gorilla lineage diverged from chimp, bonobos and human lineage about 10 to 12 million years ago
- hominid lineage gave rise to us when it diverged from chimps and bonobos 6 million years ago
gorillas
- one of three african great ape species that are our closest surviving relatives
- Gorilla gorilla
- more distant related than other two african apes (chimps and bonobos)
reductionism
- the form of explanation characteristic of the scientific method
- the universe is organized in levels of complexity, each emerging from a small subset of the properties of the simpler level below.
- ex. life is merely a special case of chemistry
- ex. Biological systems are just a very specific subclass of chemical systems
- human social behavior emerges from the simple control of a few specific elements of non-human animal social behavior
- the new theory of human origins, properties, and history uses reduction explanation in this book
orangutan
- a primate
- southeast asian great ape
- sole remaining asian great ape species
kinship independent (conspecific) social cooperation
- aka non-kin cooperation
- cooperation between nonkin members of the same species while there are conflict of interest are present
- when a cheating strategy would do better than cooperating
- new social behaviors that evolved as a result of suppression of conflict
- not based on genetic kinship
- pattern of social cooperation is not produced by kin-selection
- two non-kin conspecific animals can cooperate to mutual benefit
- the 2 non-kin conspecifics will almost always come into conflict
- this problem can only be solved when cost effective means exist to project coercive threat enforcing cooperation
elite throwing
- the capacity humans have to throw repeatedly and rapidly with great force and accuracy
- unique to humans
- foundational to all our unique kinship-independent social cooperation bc it allows us to project coercive threat remotely, from a distance, supporting inexpensive management of non-kin conflicts of interest
- responsible for all other unique properties as individual organisms
conflict of interest
- the central force of nature throughout the social world
- determines everything about social lives or humans and non-humans
- humans control and suppress conflict of interest while non-humans dont
why dont non-humans suppress and control conflict of interest
- its too expensive for individual non-human animals
- for humans law enforcement is a cheap and good investment
- it is natural behavior for humans
conspecifics
member of their own species
how did the difference between humans and non-human animals emerge
- elite throwing
- humans are able to kill remotely from a distance
- violence at a lower cost
- first time in history that an animal could suppress conflict of interest between non-kin at a low cost -> unique humans
new coercive technology
- increase of new coercive technology that permits cost effective law enforcement increases human social cooperation
- creates progress
combinatoriality
each level of complexity or organization in the hierarchy emerges from assembling combinations of elements from the level below
- allows quantitative accumulation of complexity at each level
- complexity emerging with simple transparency
cranial volume/brain size
- volume inside the brain case of skull
- measured in living and fossil skull
- human brain size is much bigger than chimp
- brain expansion requires assets that can only be provided by newly expanded scale of social cooperation
- increased human brain size allows us to identify the evolutionary origin of uniquely human kinship-dependent social cooperation
parsimony (theory of everything or TOE)
- scientific theory that is both simple, economical, and powerful while predicting many event within a wide domain
- can be written on the front of a shirt
- a broad and parsimonious theory is called a TOE (theory of everything) for its domain
human uniqueness problem
humans are merely one of millions of terrestrial animal species, yet have capabilities and a level of ecological dominance beyond those of any other animal
species
- all sexual organisms that are relatively similar in their anatomy and behavior
- able to mate and produce viable fertile offspring
- a species is a member of a genus (multiple species in a genus) -> they have a common ancestor
speciation
- a single species gradually splits into two separate populations who cannot interbreed anymore
- results from a reproductive barrier forming
- once split they evolve independently
extinction
the loss of all members of a species of organism
- can result from climate change, competition
- current rates are very high
By-product mutualism
- cooperation between nonkin members of the same species
- when conflicts of interest do not exist at the time
- 2 non related lions cooperate to take down another dominant lion
- different from kinship independent (conspecific) social cooperation
information
- personal experience- same for non human and human
- information learned from other- cultural information- not as much for nonhuman
- genetic information
genetic information
- builds bodies
- behaviors
3 main segments/objectives
- uniqueness of our solar system and earth as to the existence of the elements and stable climate to allow large animals to evolve
- biological chemistry is simple
- explain the building of complexity and emerging properties based on hierarchically bested combinatoriality
Solar system
- many hydrogen and some helium
- dependent on heavier atoms -> synthesized by nuclear fusion -> form large debris clouds
- 3rd-4th generation
- you can tell we have a lot of heavier atoms by looking at stars -> elements used to make organisms
- 1-in-a-thousand
Orpheus-Earth Mark 1 collision
- formed the moon
- formed asteroid belt
- 1-in-a-billion event
earth
- iron nickel core
- plate tectonics
- wobbles on its axis -> prevents ocean boiling -> stable climate -> redistributes momentum
- 1-in-a-trillion event
stars
-only 100 billion stars in a typical galaxy
settled knowledge
- known
- dont need to look at the evidence as much
- towards the top of the pyramid
- not disputed
physical and chemical laws
- same physical and chemical laws for rocks as there are for organisms
- the animals are more complex and have higher information content
- no special or new laws that differentiate them
subatomic particles
- atoms are made up of electrons, proton, neutron
- nuclear diameter- 10^-13
- nuclear forces- pulls the atom together
- electromagnetism- net neutral charge
- how the electron organize themselves in predictable ways around the nucleus
- outermost shell determine chemical properties
gold
- flexible bonds -> maliable
- electrons float freely -> conductive
- reflect photons -> shiny
- similar to silver and copper (same column)
carbon
- forms rigid bonds
- when you bend carbon bonds -> it shatters
- black
chemical bonds, strong and weak
- share and/or exchanging electrons
- character and strength depends on the interacting atoms
- strong- stable, covalent
- weak- readily reversible
compound
- chemical combination of multiple atoms
- range in size
- simple
molecule
- chemical compounds that have a large # of atoms
- can be large (macromolecule) -> DNA, most proteins
- simple in structure
information
- central concept of all biology
- biological systems are the products and agents of self replicating information
- information is encoded in physical entities (ex. DNA sequences) (is not the physical recorded entity)
- consists of order reflected in its physical instantiation -> allows that order to be coped and/or interact with the external physical world
design information
- information that builds and controls the properties of biological organisms
- genetic design information
- culturally transmitted design information
- personal experience
- all forms of design information are subject to natural selection
vehicle
organism
-built by genetic design information
catalyst
- molecules that bind to and influence the chemical rxn of other atoms without themselves being permanently altered
- selectively accelerate chemical rxn
- allows cells and organisms to take in simple compounds and use them for specific rxn that benefit us