Reading Cards Prior to first Playthrough?

Do you consider it bad taste as the owner of a game, to read through all the cards and their effects prior to teaching? Does this give you an unfair advantage over the players you are teaching it to. For example, the Spartacus board game, has lots of unique intrigue cards, and knowing what some of those are, can help you knowing they are there, on the other hand, you aren't going to sit down and go through every card. What are your thoughts? Go in blind to the various decks (use a couple for teaching purposes), or read all cards?