A puzzle about rates of change

David Builes, Trevor Teitel

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Most of our best scientific descriptions of the world employ rates of change of some continuous quantity with respect to some other continuous quantity. For instance, in classical physics we arrive at a particle’s velocity by taking the time-derivative of its position, and we arrive at a particle’s acceleration by taking the time-derivative of its velocity. Because rates of change are defined in terms of other continuous quantities, most think that facts about some rate of change obtain in virtue of facts about those other continuous quantities. For example, on this view facts about a particle’s velocity at a time obtain in virtue of facts about how that particle’s position is changing at that time. In this paper we raise a puzzle for this orthodox reductionist account of rate of change quantities and evaluate some possible replies. We don’t decisively come down in favour of one reply over the others, though we say some things to support taking our puzzle to cast doubt on the standard view that spacetime is continuous.

Original languageEnglish (US)
Pages (from-to)3155-3169
Number of pages15
JournalPhilosophical Studies
Issue number10
StatePublished - Oct 1 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Philosophy


  • At-at
  • Grounding
  • Gunk
  • Instantaneous velocity
  • Motion
  • Rates of change
  • Spacetime
  • Truthmaking


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