Re: Is SCIENCE magazine 2 or more years behind; Re: Orrorin

From: Mario Petrinovich (mario.petrinovic1_at_zg.htnet.hr)
Date: 09/06/04 

Date: Mon, 6 Sep 2004 09:27:31 +0100

        If throwing was successful, we wouldn't need spears. I never saw a
primate (or human) that is successful in this. That uses this as its
defence, or attack. In jungle you cannot find enough rocks. I was in army.
There we threw handgranades to 50m distance. We hardly managed to reach it.
Predators attack from ambush (in jungle). In a sprint. No way you could use
this. There are no rocks on trees. I saw a documentary about gorillas. On a
first strange sound, they were all climbing trees. No time to search for
rocks. I saw my neigbour throwing stones on my dog. Animals have so fast
reaction times. My dog was so comfortable, to let stone flying to about 1m
distance from its head, and then simply moved from its path. I couldn't
believe it when I saw it. And not only once. You can hit an animal from
behind, but when animals attacks you, you are in front. And animals attack
so fast, you even wouldn't have enough time to reach to stone, even if you
know where it is. And attack from behind.
        And, we do have bipedal animals already. Birds, hopping animals,
sifaka. Why don't you research how those animals became bipedal. Especially
those that are bipedal at rest.
        So, living in trees cannot blend with throwing, simply because it is
hard to find rocks on trees. Primates are quadrupedal. No free limbs. Apes
are suspensory. In suspension, your hind limbs are actually free. A
suspension has something with swinging, but not underarm, but overarm. If
you ask me, very weak scenario. -- Mario

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