Morten Monrad Pedersen
The rules say to discard unused molecules during the clean-up phase, but they don't mention whether the discarded tokens are open or hidden information. So, can I look at the discarded molecules and base my next move on this info?
(Similar question applies for discarded proteins.)
Molecules are discarded face down. From page 8 of the rulebook (note the two words I've highlighted):
Most commonly you are instructed to place new Molecules on a specific hex; if the specified hex already contains a Molecule, then you must place
the existing Molecule face down in a discard pile and draw a new Molecule to replace it
For proteins, however, the rulebook doesn't specify whether they should be discarded face down or not (as far as I can tell). When I play I place them face down.