id author title date pages extension mime words sentences flesch summary cache txt work_kujhacndlrfrrmro2kbsjh7uta J. Butterfield The Rotating Discs Argument Defeated 2005 36 .pdf application/pdf 18730 1084 59 taking objects in classical mechanics (whether point-particles or continuous bodies) to have only temporally extended, i.e. non-instantaneous, temporal parts: supervenience of persistence on qualitative similarity among, and-or intrinsic properties of, the perdurantist's temporal parts; where (b) such supervenience may even be and (d): a certain sort of perdurantist|roughly speaking, one who accepts only noninstantaneous temporal parts|can both appeal to di�erences of velocity, and garner Since such parts have a rich set of intrinsic properties, the prospects for the perdurantist project of de�ning persistence (or providing a supervenience-basis for it, or velocities and instantaneous velocities of point-sized bits of matter within a homogeneous disc provide intrinsic properties of the disc's temporal parts. both ways, instantaneous velocity is \hardly extrinsic", i.e. hardly temporally extrinsic, since its ascription to an object o at t implies \little" about matters of fact at Furthermore, just as Section 4.1.2 proposed that in a classical setting, a perdurantist accepting only non-instantaneous parts could have their account of persistence ./cache/work_kujhacndlrfrrmro2kbsjh7uta.pdf ./txt/work_kujhacndlrfrrmro2kbsjh7uta.txt