You are the part that decides what the patterns mean.  In every rank of life, we take our best guess with incomplete information. You match the experience of your memory with the patterns of the outside world.  You assign a meaning to those patterns and gamble that your guess is correct.  You look for patterns and decide what they mean to you and your needs.  Guess correctly enough of the time, and you get the chance to pass your genes on to the next generation.