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From: Mario Petrinovic <mario.petrinovic1@zg.htnet.hr>
Newsgroups: sci.anthropology.paleo
Subject: Re: Reading 758-27 (archive)
Date: Sat, 14 Dec 2024 15:01:56 +0100
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On 14.12.2024. 5:34, JTEM wrote:
>   Mario Petrinovic wrote:
>> On 13.12.2024. 6:45, JTEM wrote:
>>>   Mario Petrinovic wrote:
>>>>          We have blade technology 500 kya.
>>>
>>> We had throwing spears 400,000 years ago. Blades
>>> go back millions of years, if you want to get
>>> technical.
>>
>>          The last that I heard is that blades started to occur 500 
>> kya, and they became common 300 kya, if I recall correctly.
> 
> It's kind of funny how a chimp banging something with a rock
> is "a tool" but early Homo (or even pre homo) BREAKING rocks
> to produce sharp flakes for cutting isn't a "Blade."
> 
> They were sharp and used for cutting!
> 
> Put another way:  How far back do CUT MARKS go?
> 
> Cut marks == blade
> 
> No?
> 
> I say yes, and your blades go back 3 million years plus, but
> some evidence.
> 
>>          It looks like you are confusing something. Not every sharp 
>> edge is a blade. Blade tool is only a sickle, there is no other blade 
>> tool. Blades have sense only as a sickle.
> 
> A "Blade" is a "Tool" with a sharp edge used for cutting.

		A knife is sickle, a and a sickle is knife. No, it isn't.