Re: Human pretending to be a frog nearly drowns.....

nickname wrote:
That's (12 hrs) a lot of time in the water, I can't imagine descendants
prone to such wrinkly skin if that were the case.

Yes 12 hrs is a lot of time in the water.
I see 4+ hours as likely, though perhaps much longer.

Well, I don't know what DD's aquatic-time estimate is based on, or why
4+ should be typical? Perhaps much longer, as you say, could just as
well be 12 hours.

If your water-time hours are too low, it seems you are still
predominately a land creature and what you do most of the time would
be selected for. What triggers the switch from terrestrial to
semi-aquatic? Four hours is only one third of day at the equator. If
4+ is good in the water, then 8+ should be twice as good, I see no
reason to stop and revert back in the opposite direction anymore than
seals did.

I don't know whether our wrinkled palms and soles are significant,
(their skin may have been quite different), does having wrinkly fingers
prevent you from washing dishes? What 's the negative effect of
wrinkled palms and soles?

It depends on what you are going to do after you get done washing the
dishes. There is no reason to believe that the selection for callouses
on our hands and feet haven't been with us for a long time. As you can
see by Blaine's hands he would not be in any condition to do what ever
task it was that selected for the callouses in the first place. I
realize that he is an extreme example, but just the same water softens
hands and feet. For instance, I think he would have trouble going ten
rounds of boxing with hands in that condition where ordinarily he
would not.

I grew up near the salt water. As kids we seldom ever worn shoes in the
summer time and it did not take long for our feet to get into shape.
Walking on a rocky beach covered with barnacles was no big deal until
you spent a while wading around in the water and then tried to walk
back to the parking lot.
Or if you are deep enough in the water, the barnacles aren't a problem
there either because you are nearly floating anyway.
If all hominids were doing is sitting around on a beach all day after
getting out of the water, fine, then who cares about the bottom of ones
feet. I'm skeptical that was happening, otherwise we would have lost
the ability to form callouses after a million years. I've seen several
people who could walk around an obsidian quarry in their bare feet and
not get cut. I would like to see a test where they soaked their feet in
salt water for 4+ hours or perhaps much longer (as you keep saying) and
then tried the same stunt. Maybe I'm wrong, but I would still like to
see it tested.
Two and a half million years ago hominids were out on the savanna. That
takes thick callouses..


4+ hrs. spent food foraging aquatically.
Early period, I meant pre-Hs (before salt trade), excluding the rift &
salt lakes.
Water hole = fresh water.

Yes, fresh water, that's where the early hominid evidence is at, not
on the salt-water beaches.



During inland transits, perhaps slept in
tree-nests or rock shelters. Beach sleeping on marine beaches likely
IMO, possibly rock shelters along marine cliffs and in palm trees. DD


What inland transits? What is your evidence for those?
I like the rock-cliff idea, but those are found inland also, don't
need the sea for that. Kick a few baboons out of the way, and home
sweet home.

.

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