Full Idea
Sometimes it is said that sense-data are public, and parts either of objects or of the surfaces of objects.
Gist of Idea
Some claim sense-data are public, and are parts of objects
Source
A.R. Lacey (A Dictionary of Philosophy [1976], p.196)
Book Reference
Lacey,A.R.: 'A Dictionary of Philosophy' [RKP 1976], p.196
A Reaction
This suggests two drastically different theories, one making sense-data into mental events, the other placing them in the 'external' world. The latter theory can dovetail them with the physics, but then why would we need them?