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1: The power of observation; 2: Asking the right question; 3: When all you need is one; 4: Three principles of observational design; 5: The selective observer; 6: Down to detail; 7: Observing in zoos, on farms, and in the wild; 8: Analysing observations; 9: Further observations; 10: Observing the Future; Appendix 1: Some random numbers; Appendix 2: Power and sample size; Appendix 3: Beaufort wind scale

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