The myth that until very recently we used to think that the climate was constant is also propagated by the CRU climate scientists, who write on their history page:» Hubert Lamb's determination and vision can only be appreciated in the context of the view, generally prevailing
within the scientific establishment in the 1960s, that the climate for all
practical purposes could be treated as constant on timescales that are of
relevance to humanity and its social and economic systems.»