 This evidence is consistent with the claims proposed in Baron's article—that people's opinions about what makes good thinking can influence how arguments are generated.Before psychological research on confirmation bias, the phenomenon had been observed throughout history.Beginning with the Greek historian Thucydides (c. 460 BC – c. 395 BC), who wrote of misguided treason in "The Peloponnesian War"; "... for it is a habit of mankind to entrust to careless hope what they long for, and to use sovereign reason to thrust aside what they do not fancy".