I'm going to throw out a guess here and say that the high percentage of haft ed scrapers had to do with that particular culture/village/time period/ or whatever you might want to argue having a propensity for the reuse of points. Most whole and/or "prefect" arrowheads, atl atl points, knife blades, etc really aren't found in the camp site proper... people may think so but if you think about it....... picture a small village living on the edge of some long gone river or creek.. they may have hunted a lot but it wouldn't have been right outside the door of their wigwam.. they would have probably gone in search of game up and down that river or creek system in either direction and lost some points hunting... thus we find some perfect points...BUT the majority of what was brought back to the camp would have been "used" and/or broken points. Points that might not have even been fully removed from the carcass in many cases until the animal was butchered. Now a thrifty group of people... specially if they were using the hides to a great degree, would have been processing a lot of hides.... logic would say that litterally one or two minutes with an antler tip can turn this broken atl atl point into a nice usable haft ed scraper for my wife to scrape hides with. I would say that a large number of such artifacts at any given site would be indicative of just such a thing.... perhaps for an extended period of time. I would also predict that as you shy farther and farther from that particular camp site the more and more you percentages of "perfect" points vs. haft ed scrapers (reused broken spear points) would increase. Likewise I think A LOT of confusion in some camp sites, particularly in what is now plowed fields, come from the fact that most fail to consider how times, and camp sites, changed location over time. If you have a camp site for a small or even large group of people at point "X" along the river and this is the best camp site along that river for a hundred or two hundred years (even a small group of people will produce quite a few artifacts over a hundred years) you will find predominately broken and/or used artifacts in that camp site. The more perfect or unused looking projectile points may be more likely to be found a mile or two down stream... until the camp site changes.. now the area where just a generation or two ago most atl atl points were lost hunting is now the main village site and the place where that culture used to camp, point "X", is now fertile hunting grounds (and thus having a fair number of "perfect points" lost in it. The period of time that has elapsed is minimal and the artifacts being found between point X and the next are so similar that it may be impossible to tell any difference. Soooo... if I found a camp site that was heavy with re-utilized broken points I would guess that it was a camp site for a period of time.. probably for quite a while, but for some reason was not an area that was used to hunt a lot of game before or after it was occupied... of course the reasons and implications here are almost limitless but.. perhaps there was some type of change in the ground water level or some other important natural resource the precluded the use of that land for much of anything except that particular period of time when it was being inhabited. Perhaps erosion of one sort or another had played a role... who knows for sure... but the predominance of haft ed scrapers would suggest a camp site for a longer period of time than it was ever used for a hunting grounds.
