Full Idea
It makes no sense in ontology or modern physics to think of space-time as empty and propertyless. Space-time nicely fulfils the condition of a substratum.
Clarification
A 'substratum' is a propertyless bearer of properties
Gist of Idea
We can't think of space-time as empty and propertyless, and it seems to be a substratum
Source
C.B. Martin (The Mind in Nature [2008], 04.6)
Book Reference
Martin,C.B.: 'The Mind in Nature' [OUP 2008], p.44
A Reaction
At the very least, space-time seems to be 'curved', so it had better be something. Time has properties like being transitive. Space-time (or fields) might be a pure bundle of properties (the only pure bundle?), rather than a substratum.
Related Idea
Idea 15481 I favour the idea of a substratum for properties; spacetime seems to be just a bearer of properties [Martin,CB]