A comment from the peanut gallery, for what it's worth (assuming anything) :
A lot of times people (IMHO) miss what something is by assuming that every piece of knapped chert was on its way to becoming a point (or whatever), and discarded when that didn't work out.
Oftentimes, while there are edges on stuff like you're showing that could have been (and maybe were) used to cut, chop or scrape something, if you think the way they did rather than the way we do, a light starts coming on.
While a bifacially-worked knife may be your tool of choice for heavy work, for finer jobs (like gutting a fish or cutting off bites of meat, Esquimo-style), the thin edge of a freshly-struck flake is the sharpest cutter you can possibly come up with. This gets us into the argument over whether a utilized flake was a "tool" or not (which depends on how you define "tool"), but points to the probable function of (many of) the innumerable blocky, chunky pieces on habitation sites as flake cores. Chunks of chert with edges suitable for removing flakes.
This is kind of an inside-out way of looking at it, but it makes sense of what is otherwise just an improbable quantity of "debitage."
. Great finds!
