Here's my attempt
Oral History is a complex history, a human history, and a voluminous one. Perhaps it is best understood by approaching it the way one might approach an archaeological site, examining it layer by layer, piece by piece. “Oral” tells us that it is spoken, that there is a voice, one human voice that drives it, one voice with which it all begins. “History” tells us that this one voice speaks of past events, of memory and all its shifting, unreliable whims. But it is this unreliability, this personal quality that makes Oral History so valuable. It complicates the sterilized, official story, challenges it with the perceptions of traditionally ignored participants, the individual human voices, our voices. We are all witnesses to history and our individual stories balance the “facts,” bringing us closer to, if not the truth, then perhaps a truer understanding.