In Star Trek, they determined that altering the past could seriously mess up the present universe. Climate scientists are not bound by such constraints.
From: Tom Wigley <email@example.com>
To: Phil Jones <firstname.lastname@example.org> Subject: 1940s
Date: Sun, 27 Sep 2009 23:25:38 -0600
Cc: Ben Santer <email@example.com>
It would be good to remove at least part of the 1940s blip