Deletion of Irish pre-Celtic substrate language

Comment: per DGG, as well as that this is well-documented theory.  It is not a hoax, nor necesarily a fringe theory - lingistics is not as settled a field as it was c. 1986 (when I was in college).  An example not yet explored is Ptarmigan; see these :http://www.etymonline.com/index.php?term=ptarmigan, http://books.google.com/books?id=gMBZAAAAMAAJ&pg=PA448&lpg=PA448&dq=ptarmigan+%2B+etymology&source=bl&ots=lEil1nPzcQ&sig=qVRCDxpCZINtb0nmPqepsKXxPik&hl=en&ei=a9oWS_OsC8bflAfp1OzTBQ&sa=X&oi=book_result&ct=result&resnum=8&ved=0CBwQ6AEwBw#v=onepage&q=&f=false
Stance: keep
Cited policy: Wikipedia:Reliable sources (WP:good sources)