id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
work_7znlnmthv5g27is73pg6go5ewi	Geurt Sengers	Presentism and black holes	2016	15	.pdf	application/pdf	7256	635	70	impossibility of postulating a viable present in the presence of black holes, in particular the Schwarzschild geometries. Keywords Presentism · General relativity · Black holes · Philosophy of time In brief, Romero and Pérez argue that at the horizon of a black hole, the only viable choice for a present is its (light-like) horizon itself. Fig. 1 Behaviour of the lightcones approaching the horizon in Schwarzschild coordinates at different distances from the horizon of a Schwarzschild black hole. When using Schwarzschild coordinates, care must be taken not to draw ontological conclusions about space-time that derive from the singular behaviour of (a distance's or surface's being time-, space-, or light-like) is a coordinate invariant coordinate time; after all this is one direction orthogonal to the horizon (null surfaces How problematic for presentism the presence of closed time-like curves in a solution	./cache/work_7znlnmthv5g27is73pg6go5ewi.pdf	./txt/work_7znlnmthv5g27is73pg6go5ewi.txt