Full Idea
Popper's theory implies that more informative theories seem to be less probable.
Gist of Idea
If a theory is more informative it is less probable
Source
Geoffrey Gorham (Philosophy of Science [2009], 3)
Book Reference
Gorham,Geoffrey: 'Philosophy of Science' [One World 2009], p.75
A Reaction
[On p.75 Gorham replies to this objection] The point is that to be more testable they must be more detailed. He's not wrong. Theories are meant to be general, so they sweep up the details. But they need precise generalities and specifics.