  You are right: the discussion page is a disaster (some archaeologists just hate any of those ide-as, often without being interested in facts and rational arguments). For that reason I recom-mended only the contribution from 15/07/2013.   And there was a little equivocation: German “Hochschullehrer” at the Wiki-page “Hans Giff-horn” doesn´t mean “high school teacher” but (as in Giffhorns case) university professor. And you neglected, that he studied Chachapoya culture since 1998. The fact, that he is not a spe-cialized archaeologist but studying cultures in general, helped him to approach the subject in an interdisciplinary and more open way. I read his new book: after having studied the results of archaeological research on Chachapoya culture and the contradictory theories about its origin, he came to the conclusion, that questions have to be pursued, which most archaeolo-gists don´t ask. He did, and so new discoveries were possible – more, than can be described here (he filled a book with these discoveries, and they complement each other).   