Summary |
According to the perdurantist, persisting
objects are “space-time worms.” That is, persisting objects are spread out in
time in much the same way as how they are spread out in space—just has I have
spatial parts (e.g. hand parts and a head part) which occupy spatial subregions
of the greater spatial region I now occupy, I have temporal parts (e.g. me when
I was an infant, me now) which occupy temporal subregions of the greater
temporal region I occupy. Properly understood, the perdurantist maintains, I am
a four-dimensional fusion of all these spatio-temporal parts. Perdurantists
face a variety of challenges. It’s not very intuitive, some say, and this is
reason to reject the view. Others argue that there are strong disanalogies
between time and space which undermine the parallels between spatial parts and
temporal parts that perdurantism relies upon. Then there are those who find the
notion temporal parts simply unintelligible. In addition to trying to address
these and other issues, perdurantists argue that their theory of persistence
has a variety of virtues—including, for instance, a natural compatibility with relativistic physics. |