Barbara Fitzpatrick wrote:As long as the response to a logical concept is ridicule, nobody researches it.
Come up with some points that aren't
literally "
ridiculous," and perhaps they'll be less likely to be ridiculed.
From later in the post:
Barbara Fitzpatrick wrote:Most of the AAH works that way - poses questions and gives logical answers that need research, not ridicule, to prove one way or another.
Oh really? Let's put that to the test.
Also from later in the post:
Barbara Fitzpatrick wrote:Fur/fat, bipedalism, voluntary control of breathing/physical changes required for vocal language are some of the ones I find most logical to have an aquatic explanation.
Good, we'll start with those.
Barbara Fitzpatrick wrote:All animals have some fat - terrestrial animals don't have the subcutaneous layer of fat that humans do.
As I said above, monkeys do. If AAH is the explanation for humans' subcutaneous fat, why do monkeys have it too?
Hypothesis: Humans' subcutanenous fat layer arose during an aquatic phase for the purposes of insulation.
Test: Compare characteristics of other terrestrial and aquatic mammals.
Data: Monkeys -- non-aquatic mammals -- also have the subcutaneous fat layer. This is contrary to the AAH explanation unless AAH also proposes that monkeys went through an aquatic phase or unless the monkey line split from humans after the aquatic phase of a common ancestor. As the AAH purports to explain differences between humans and monkeys (and common chimps and bonobos), the findings are inconsistent with the proposals of AAH.
Conclusion: AAH is contradicted.
In fact, there are better explanations: Subcutaneous fat greatly affects body shape, and in apes like us, body shape is an essential component of sexual selection. In support of this, the onset of puberty triggers the development of fat deposits in certain places -- especially in females -- that make them more attractive to the opposite sex.
Barbara Fitzpatrick wrote:All mammals have hair follicles, some have dense hair that protects from sun in hot climates as well as cold/rain in other climates. Humans do not. The AAH suggests a reason/mechanism to account for the change from fur to fat...
Did naked mole rats have an aquatic phase, too? Elephants have relatively little hair; did elephants have an aquatic phase, too? Worse, many aquatic mammals
have hair and use it to store air as an insulator.
Hypothesis: Hair loss is best explained by an aquatic phase.
Test: Compare characteristics of other terrestrial and aquatic mammals.
Data: Not only are some terrestrial (and never aquatic) mammals relatively hairless, but many aquatic mammals are hairy.
Conclusion: AAH is contradicted or -- at best -- unsupported.
In fact, humans on average technically have
more body hair than chimps, but it is finer, lighter, and sparser and therefore harder to see.
Barbara Fitzpatrick wrote:AND bipedalism
Morgan has two "reasons" for making this claim. She reneged on one of them (the stronger of the two, coincidentally, though that's not saying much) eleven and a half years ago, and the other one is not only unsupported but actually
contradicted by research.
Do
read up on this, please.
You didn't make any actual claims about breath control and physical changes for vocalization; nevertheless, the refutations exist.
To say that humans' breath control came from an aquatic phase is asinine.
All vertebrates dive, and some monkeys hold their breaths. So do dogs. Did dogs/wolves have an aquatic phase in their evolution? As any dog owner will tell you, not only do dogs still have fur, but they've got pretty good control of the vocal noises they make.
Additionally, some chimps have descended larynges. So do deer. Many, many mammals' larynges descend while vocalizing, especially loudly; do all of these animals have aquatic histories?
At this point, I'm just repeating myself... just like I said I would be. I'll cut to the chase: Conclusion: AAH is unsupported.
Barbara Fitzpatrick wrote:(Occam's Razor doesn't say there's a simple explanation for every issue, just that the most simple is probably right.)
No, it says that given two explanations which both explain the phenomena equally well, the simpler one is probably correct. AAH not only doesn't accurately explain the phenomena, it throws more [pun alert] monkey wrenches into the picture than problems it "explains."
Barbara Fitzpatrick wrote:Part of the issue comes down to everybody talking about these changes as if they occurred in one generation - and that is partly due to the "pop" style of writing Morgain, among others, uses. It's amusing, but not literally defensible.
I've seen nobody on either side presenting the arguments as if the changes took place in a single generation, or even only a small handful of generations. However, when we do ask questions about "Why don't we see [insert general aquatic trait that humans don't have] in humans?", the answer is always "There wasn't enough time." We can get radical changes like a large increase in brain size and complete relocation of fat cells in this unknown period of time, but our ears don't get any smaller at all and our skin doesn't become any more resistant to waterlogging?
Barbara Fitzpatrick wrote:I've noticed both sides getting "pissy" in this discussion.
Both sides get pissy in the creation/evolution debate too; this is yet another similarity. One side makes shit up and promotes it with no evidence -- either experimental or observational -- and whines while the other side rips them a new one; meanwhile, the other side provides plenty of ammo to counter the bullshit and has to complain because the first side is too willfully ignorant to bother reading the points being presented.
Barbara Fitzpatrick wrote:Pointing out similarities and drawing logical conclusions that need to be researched on the relative ease of gathering high-protein, high DHA food from littoral pools v. getting it from catching things that run faster than you do does not equal an "if A and B, then C" statement.
And you wonder why people get pissy. It tends to be because we have to say the same thing over and over and over. We manufacture DHA from LNA, which we can get from vegetables. Did veggies run away from animals millions of years ago? Do you really think that we were essentially incapable of hunting game many hundred thousand years ago?
Barbara Fitzpatrick wrote:Why do humans have a larger brain, and that most recent part of the brain require DHA, when our closest relatives (chimps) do not?
Once again, why is this a problem? There is no shortage of DHA/LNA in a savanna diet. If one were to accept the logic that "high" need for DHA means need for "high" DHA food, then the (then unused) LNA pathway likely would have been broken by mutation, just like dozens of our amino-acid manufacturing genes and our vitamin C synthesis gene.
Here are the big questions you can answer for me. You said that AAH provides a time and a location:
When did this aquatic phase take place?
How long did this phase last?
How does this conform to our knowledge of braincase volumes derived from fossil finds?