Some problems with picking the parameters that are most likely to generate the data
		• What if we only tossed the coin once and we got 1 head? – Is p=1 a sensible answer? • Surely p=0.5 is a much better answer. • Is it reasonable to give a single answer? – If we don’t have much data, we are unsure about p. –  Our computations of probabilities will work much better if we take this uncertainty into account.