We have been through this excercise before, and at the cost of boring the audience to tears, here goes:
Percussion flaking is unique since the hammer strike sends impact ripples through the material, such as chert, etc, much like ripples on a pond. When a potential artifact is recovered it really isn't too difficult to tell whether natural forces or human forces were at work. For those who have been out in the field they will agree that somewhere between picking up 1,000 and 10,000 specimins you get a pretty good feel for what's what.
People like Al Goodyear don't deal in wishful thinking. When plucking a potential artifact out of the dirt he would be looking at context and all the parameters that tell him whether the object was human-made or not. In 100% of the cases of critisism that I have noticed,
none of the critics have actually examined the artifacts. That is simply piss poor science borne of arrogance.
Goodyear's site simply represents an ongoing hypothesis that some sort of human was kicking around near the shore in the southeast US sometime around 50kya, making tools. Just because Stuart Fiedel cannot get off his ass in Washington DC), travel to the site and review the material first-hand while speaking with Goodyear doesn't mean the potential artifacts are sharp rocks. Yes, ice can split rocks. But ice does not leave percussion ripples. Some of the bifacial artifacts that I have retrieved at the 18-20,000bp level locally have more than a dozen percussion marks per side - ice my ass.
It's really easy to critisize and come up with objections to anything when someone else's discovery doesn't fit your pre-conceived paradigm. Those who employ the scientific method are supposed to keep an open mind while reviewing the evidence at hand. It's alright to say, "I don't know." Don't worry - people won't panic - they'll be curious instead.
Use some imagination, Stuart - it may improve your sex life!
Below is a bifacial multi-purpose tool taken from the 18-20,00bp level. It can be used as a scraper, a knife and a shaft straightener. It ain't no sharp rock.
Below is a small knife taken from the same layer. Hard to see in the picture but there are about a dozen pressure flakes on the edge of that hummer. It ain't just a sharp rock.
Below is a bifacial teardrop point with dozens of flakes per side (picture courtesy of Charlie Hatchett). It ain't just a sharp rock.
Below is a carved, bifacial broken pendant, yes pendant, taken from the same site. You tell me that the outer notch on each side was carved by ice on a piece of chacedony, Mohs hardness 7.0!
Obverse (sorry about the fuzzy pic but you get the idea):
Reverse (more sorry about the fuzzy pic):
Below is a big-ass handaxe with notches removed to fit a thumb and fingers for a better grip. Damn, I forgot ... there are no handaxes in North America!!!
