Full Idea
In quantum statistics, what would be regarded as two possible states of affairs classically is treated as one possible state of affairs.
Gist of Idea
In quantum statistics, two separate classical states of affairs are treated as one
Source
J Ladyman / D Ross (Every Thing Must Go [2007], 3.1)
Book Reference
Ladyman,J/Ross,D: 'Every Thing Must Go' [OUP 2007], p.133