Full Idea
Imagine a perfectly homogeneous non-atomistic disc. A record of all the non-relational information about the world at that moment will not reveal whether the disc is rotating about a vertical axis through. This tells against Humean supervenience.
Gist of Idea
A homogeneous rotating disc should be undetectable according to Humean supervenience
Source
Katherine Hawley (How Things Persist [2001], 3.2)
Book Reference
Hawley,Katherine: 'How Things Persist' [OUP 2004], p.73
A Reaction
[Armstrong 1980 originated this, and it is famously discussed by Kripke in lectures] There will, of course, be dispositions present because of the rotation, but Lewis excludes any such modal truths.