When the mind seeks safety, security - i.e. something concrete on which it can anchor - it has recourse to a conclusion or to a hypothesis. Experimentation does not lead to conclusion; the experimenter keeps on watching, looking and observing. To understand what is taking place in the experiment, he is in a receptive mood, quiet and sensitive like a photographic plate, without criticising or condemning. So also should be our attitude if we would understand the full significance of a marvellous scene, a picture, or a poem.