“…9 See, e.g., Popkin 1992, 9-49, andTuck 1988. 10 See also Adams 2014Adams , 2016 Historians of science have not made this error for several decades, but the presentism is still part of work on Hobbes's philosophy of language and politics, and thus often affects treatments of the unity of his system; see, e.g., Daston andStolleis 2008, 7, andDeigh 1996. Mostly, the problem is one of omission. By not specifying the extension of "geometry," contemporary authors invite misinterpretation.…”