update the oreskes abstracts naomi oreskes claims to have analysed abstracts she found listed on the isi web of knowledge database using the keywords global climate change however this claim is incorrect while the isi database includes a total of documents for the period in question it lists only abstracts it is thus impossible that oreskes analysed abstracts in my original critique i used the same isi database and the same key words as oreskes but used all documents listed therein while oreskes did not specify the method she applied in her study she later confirmed that she had limited her search to articles while i included all document types in my initial assessment this difference appears to explain the discrepancy between the abstracts oreskes claims to have analysed and the documents i found and considered although her figures don t add up one way or another some commentators have argued that these differences undermine my main criticism while they validate oreskes' claim however as i have stressed repeatedly oreskes entire argument is flawed as the whole isi data set includes just abstracts less than that explicitly endorse what she has called the 'consensus view ' in fact the vast majority of abstracts do not mention anthropogenic climate change i have posted all documents and abstracts listed in the isi database under the key words global climate change for the period below arranged by year check for yourself make sure you differentiate between implicit and explicit endorsement of the ipcc consensus m ost of the observed warming over the last years is likely to have been due to the increase in greenhouse gas concentrations