Full Idea
Dispositional essentialism implies that the fundamental laws of nature must be strict, not ceteris paribus.
Clarification
'ceteris paribus' means 'other things being equal'
Gist of Idea
Dispositional essentialism says fundamental laws of nature are strict, not ceteris paribus
Source
Richard Corry (Dispositional Essentialism Grounds Laws of Nature? [2010], 1)
Book Reference
-: 'Australasian Journal of Philosophy' [-], p.2
A Reaction
I am not keen on the 'laws' of nature, but since essentialism seems to make them necessary, you can't get stricter than that.