RE: Is motion like the following?
January 1, 2016 at 11:14 am
(This post was last modified: January 1, 2016 at 11:16 am by bennyboy.)
(December 31, 2015 at 4:18 pm)Exian Wrote:(December 31, 2015 at 9:29 am)bennyboy Wrote: Motion is specifically a change in space. If space is an idea, then you have at best the idea of motion.
How can motion not also be a change in time?
Well, if a thing is in the same position in two times, it has not moved. If it is in two positions in one time, it is not one thing and you cannot sensibly ask whether it has moved. Therefore, it is implied by semantics that we are necessarily talking about 2 times, but it is the change in position which defines movement, not the change in time. The 1-time, 1-state description isn't about motion, but about thing-ness.
I'm not sure that this refinement in semantics offers much to our understanding of motion, admittedly.
