
For those of you who just thought "huh?", this is what he meant. The "truth" about the past [climate] is the basis for making decisions about future actions to address changes that have occurred moving from the past to the present. If you control the present system of measuring and analyzing climate, you can adjust the past with impunity. Having adjusted the past and controlling the present, then you set the agenda for future actions.
"it means a loyal willingness to say that black is white when Party discipline demands this. But it means also the ability to believe that black is white, and more, to know that black is white, and to forget that one has ever believed the contrary. This demands a continuous alteration of the past, made possible by the system of thought which really embraces all the rest, and which is known in Newspeak as doublethink."So, if the past was warmer... it is now cooler. If the present is cooler, it is now warmer than ever. And the future... it is whatever we say it is. And you will believe it.