[libertylover]

From what I can see in that photo, they look exactly like -- rocks...

That's what I was thinking.

[TXnMA]

At that stage of human/lithic technology development, the only stone-working tool in use was the "hard hammer" (another rock).

Impact by a hard hammer depends on 60-degree shockwave propagation to detach flakes. (Like a BB hitting glass...)

The remaining "scar" is a distinctive, "shell-shaped" ("conchoidal") depression radiating from the point of impact -- that looks very much like a clam shell.

And, the detached flake has matching, distinctive "bump" on it (called the "bulb of percussion". And, you can often see/feel shockwave "ripples" on the surfaces:

They are easy to see -- and even easier to feel with the fingers...

~~~~~~~~~~~~~~~~

And, only a fast-moving hard object (hard-hammer blow) produces a conchoidal scar. No natural process has been shown to produce them.

A couple of minutes "hands-on" with those specimens would suffice to determine if they are "just rocks" or not.

[angryoldfatman]

FOOLS! THEY’RE RELICS! [/s]

Yeah, they look like big rocks to me too. I’d have to see something else there to be impressed.