He continues to deduce the consequences of
premises in a logical way, but this is in order to test them as hypotheses, not to establish the truth of their consequences.
From: http://www.thegwpf.org/the-climate-record/4377-unchanging-science-why-climate-skepticism-is-a-virtue-not-a-vice.html «Think of it this
way: The
premise of catastrophe produces the conclusion that the political and economic underpinnings of Western civilization must be discarded -LSB-...] Now,
in a purely
logical world, the rejection of the
premise would mean that we don't have to accept the conclusion.