And what are we to make of the last sentence quoted? (firstthings.com)
Just as the the second sentence you quoted says. (slaw.ca)
What I found, however, was that the main «10,000 years» sentence quoted in that old presentation basically matched a sentence within the IPCC Working Group I 1995 Report, «The Science of Climate Change» on page 20 and repeated on page 53. (gelbspanfiles.com)