The life of someone who knows how to play beautifully is given. Playing every day, as the last and as different from other days. To play this means to pretend? I doubt, and not pretend it is like. We all pretend, there is no other way. Yes, and pretending is the meaning of a biological object, so to say it determines it and differs from a conventional device. Ordinary does not mean not so done, and therefore simplified, for example as machines created by man.
Life without different roles would be boring and not interesting.
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From @le0nid