Yeah, the important thing to remember is that no matter how attentive someone is or how encyclopedic their knowledge of the game is, there's always something more for them to learn and they'll still mess up on occasion. The only truly unacceptable mistake you can make while playing is to refuse to admit you did something wrong/were incorrect and learn from it. You had the courage to admit and accept that you made a mistake, which makes you better than some others that play the game and far better than those POs that die multiple times in a round because they don't lock their doors or check for boarders before launching.