"It is said that if you know your enemies and know yourself, you will not be imperiled in a hundred battles; if you do not know your enemies but do know yourself, you will win one and lose one; if you do not know your enemies nor yourself, you will be imperiled in every single battle." -- Sun Tzu in "The Art of War"This is so true for VtES. Not only should you know, how your own deck is working, but also how other decks are working. And this best achieved by playing the different decktypes yourself. Even if you loathe Stealth Bleed or a Weenie Presence Vote deck, having played these decks makes you understand the strength and weakness of the deck, and makes you a better player eventually. More quotes from The Art of War are available on WikiQuote.