We are talking about tool manufacture here, however, not just about tool use.

awesome_dude 4 hours ago | parent | next [-]

That's a difficult distinction to make - at which point does tool selection differ from modification for use as a tool - any animal that strips the leaves off a twig in order to use it as a tool has manufactured the tool.

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mmooss 2 hours ago | parent | prev [-]

The people of the Olduvan industry from 2.58 mya tools (the earliest accepted by consensus [0]) manufactured their tools - that's exactly what archaeologists are talking about.

Chimps and New Caledonian Crows (and maybe some other animals) also manufacture their tools, at least sometimes, BTW. IIRC the crows strip sticks and bend them into hooks to grab at objects.

Why would someone imply otherwise if they don't know? What are people trying to prove in this discussion?

[0] There's strong evidence of 3.3 mya; see other comments.

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layer8 2 hours ago | parent | next [-]

Not sure what you are asking. My point was that animals using objects as tools is a different thing than the Oldowan stone tool manufacturing “industry”. I wasn’t saying that tool manufacture is exclusive to primates. However, pointing out mere tool use by non-primates is sort of beside the point of the TFA topic, IMO.

	▲	mmooss 2 hours ago \| parent [-]
		> My point was that animals using objects as tools is a different thing than the Oldowan stone tool manufacturing “industry”. Agreed, though the dividing line is tricky. (Your prior comment didn't say 95% of that; for example, it doesn't mention animals. Because the parent comments were focused on human ancestors, that's what I thought you were addressing.)

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foxglacier 14 minutes ago | parent | prev [-]

I think the whole interest in tool making is we're looking for clues to intelligence and tools are just one of the few things they left behind. It's much less satisfying to discover an animal's tool making is an instinctual behavior like burrowing animals making their own holes to sleep in, than that they worked it out using more generalized thinking.