From the Lore card compendium:
Q: I wouldn't want to play this card (stolen orders) unless I remembered for certain that there was a card I wanted in the discard pile. Can I view the contents of the discard pile at any time to see if there is a card worthy of using this lore card?
A: Yes you may.
So, after my opponent has played a scout and discarded one command card I can just flip it over and have a look? The discarded card could give some indication of the strength of the kept card as well as the composition of the remaining cards in the deck.
Are the lore card discards also public knowledge? It would be nice to know that a certain card has/hasn't been discarded yet.