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Chapter 38. Temporal Queries > 38.1 Temporal Math - Pg. 701

teMPoRAL QUeRIeS Temporal data is the hardest type of data for people to handle conceptually. Perhaps time is difficult because it is dynamic and all other data types are static or perhaps because time allows multiple parallel events. This is an old puzzle that still catches people. If a hen and a half lays an egg and a half in a day and a half, how many eggs will five hens lay in six days? Do not look at the rest of the page--try to answer the question in your head. 38