I know the scene whereof you speak. CGI.

On Tue, Mar 23, 2021, at 11:08 AM, Eric Charles wrote:
> Bit of a tangent, but...
>  
>> Consider Arnold in the role of Terminator. He managed to convey a lot of 
>> menace and dominance simply from size and overall shape; never once 
>> brandishing his penis to intimidate anyone.
> 
> Having recently watched the theatrical release of Terminator, I was surprised 
> to find that in addition to the numerous ass shots I knew were there, there 
> *is* full frontal of Arnold early in the film. The dangly bits are 
> enshadowed, but not really hidden. Happens as he's walking through a park 
> towards 3 "punks", leading up to the iconic "Your clothes, give them to me." 
> line. 
> 
> 
 <mailto:[email protected]>
> 
> 
> On Tue, Mar 23, 2021 at 11:12 AM Prof David West <[email protected]> wrote:
>> __
>> Because I left before it ended, I have no idea how the spandrel discussion 
>> ended. Nick requested an explanation/elaboration/justification for my 
>> continued skepticism/resistance (other than being willfully obstinate for no 
>> reason) to the notion of spandrel. Hence the following — elaborated beyond 
>> the specific question of spandrel  as fodder for continuing discussion next 
>> Friday.
>> 
>> 1- I am convinced that evolutionary biologists are secretly required to read 
>> Rudyard Kipling as prerequisite to the granting of a Ph.D.. Because, every 
>> story about the evolution of a specific feature — Friday it was the 
>> pseudo-penis of female hyenas — sounds like, and is as convincing as, one of 
>> Kipling's *Just So *stories. *[Yes, trolling.]*
>> 
>> 2- Pseudo-penis as spandrel:
>>    a- Testosterone flooded female hyenas are selected because aggressive 
>> females have survival value in matriarchal hyena society. This really seems, 
>> to me, to pose a chicken-egg problem: matriarchy or female bullies first?
>>    b- Testosterone flooding creates a space — a spandrel — a space that is 
>> then "decorated." One example of 'decoration' is the pseudo-penis.
>>    c- by what mechanism does the decoration come about? Nick said it was a 
>> direct result of testosterone flooding, that "all" such results would 
>> appear, that none of them was independently 'selected for." This is a 
>> specific area where I fail to understand what Nick is saying and need 
>> correction. If I heard correctly that all effects of testosterone flooding 
>> would appear — Nick emphatically said "all" and "will" in his explanation — 
>> then:
>>     -- we should not only see a clitoris run amok, but also beards, rock 
>> hard pecs instead of pillow-breasts,  20-inch biceps, denser bones, and 
>> overall greater muscle mass.
>>     -- the "purpose" of the pseudo-penis is aggression display and 
>> reproductive-act dominance. But, of all the results of testosterone flooding 
>> that "will" result, a big penis seems the least useful for that purpose. 
>> Muscles and size would seem more than sufficient. Consider Arnold in the 
>> role of Terminator. He managed to convey a lot of menace and dominance 
>> simply from size and overall shape; never once brandishing his penis to 
>> intimidate anyone. (And if we assume he was as liberal a user of steroids in 
>> his body-building career as many of his colleagues, his penis would not have 
>> scared a squirrel.)
>>     -- Why so baroque a decoration?
>>     -- Why did testosterone cause the clitoris to merge with the urethra and 
>> the vagina? Did these not exist as separate organs in predecessor species to 
>> the hyena? How is that even possible? is the pseudo-penis not a 
>> clitoris-urethra-vagina at all but some kind of evolution of an avian cloaca?
>>     -- This specific decoration seems to have anti-survival consequences 
>> (most firstborn hyenas are also stillborn) and yet this decoration seems 
>> immune to selection. Or maybe not, we have yet to see what might succeed 
>> hyenas a few million years from now.
>> 
>> 3- More general issue: whole-part evolution. Jon seemed to understand what I 
>> was trying to say last Friday on this matter.
>>    a- Consider the peregrine falcon. Some of the traits/features that make 
>> it a formidable predator: very lightweight bones coupled with overdeveloped 
>> muscles which contribute to its ability to withstand G forces and make 200 
>> mile per hour dives (and withstand the shock of kinetic energy when it hits 
>> its prey); razor sharp talons; notched beak to sever spinal columns; 
>> full-color binocular vision with resolution that allows seeing a pigeon at 
>> distances greater than a mile; nictating membrane to protect from wind force 
>> during dives; and ability to see into the ultra-violet spectrum.
>>    b- If I understand Darwin *(a huge if):* each of these features is the 
>> result of a sequence of selected/preserved minute changes in single 
>> molecules: e.g. keratin, opsins, crystallins. Each of these molecules are 
>> expressed as a sequence of amino acid 'letters', 20 in number. If the string 
>> of letters were 100 characters in length (crystallins and opsins are much 
>> longer) then the odds of any given string are 20 to the 100 power. By 
>> comparison, the number of hydrogen atoms in the universe is estimated to be 
>> 10 to the 90th power.
>>    c- If evolution proceeded with one amino acid letter pairing with a 
>> second, getting selected, then pairing with a third, etc., each addition 
>> being one of 20 equally probable options; then, coming up with the string 
>> that expresses, precisely, as the falcon's beak is fantastically improbable 
>> (winning the lottery every year since the Big Bang).
>>    d- This brings in the question of time. Has there been sufficient time 
>> for a process of random change / selection to allow the formation of such a 
>> string. This was a huge issue for Darwin because the prevailing scientific 
>> estimate of the age of the Earth was twenty-million years. [Lord Kelvin 
>> using the equations of thermodynamics.] This was not nearly enough time for 
>> Darwin's evolution and he was **"greatly troubled by it."** Rutherford, 
>> using radioactive decay equations, *"saved"* Darwin by extending the age of 
>> the Earth to 4.5 billion years.
>>    e- **Kind-of**. If evolution literally proceeds one amino acid letter at 
>> a time to assemble a specific string that has a probability of existing of 1 
>> / 20 to the hundredth power (or more) — there is insufficient time since the 
>> Big Bang for that string to emerge via chance.
>>    f- it seems as if some kind of short-cut is essential. Suppose you have 
>> parallel/simultaneous evolution of 'sub-strings' and then 'main-line' 
>> evolution proceeds upon combinations (wholes) of these strings, Then, it is 
>> quite likely that 4.5 billion years provides sufficient time. This, it seems 
>> to me, suggests that evolution deals with an aggregate, a whole; not 
>> individual amino acids one-by-one, or even sub-strings one-by-one.
>>    g- Which circles back to the falcon. If each of the mentioned 
>> traits/features evolved independently and sequentially then we run out of 
>> time again. If each of the traits/features evolved independently then there 
>> seems to be a macro-problem of how they 'just happened' to occur 
>> simultaneously and apparently 'in concert'.
>> 
>> So my conclusion, *apparently wrong because it disagrees with the experts in 
>> the group*, is that evolution must proceed whole-organism to whole-organism 
>> and not, feature-trait by feature-trait the way that it is presented.
>> 
>> This also means, that individual feature-traits — as marvelous as the the 
>> falcon's eye or as silly as the pseudo-penis — cannot, and should not be 
>> "explained" independently. To do so is to focus on the 'noise' and not the 
>> 'signal'. Such efforts are the product of 19th century thinking and unworthy 
>> of complexity scientists like yourselves.
>> 
>> davew
>> 
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