Life Line is one of Heinlein's earliest science fiction stories, about a man who builds a machine that will predict how long a person will live. Professor Pinero's invention has a powerful impact on the life insurance industry, as well as on his own life.
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... density is 1,058.4/km² (2,740.4/mi²). There are 5,574 housing units at an average density of 365.4/km² (946.1/mi²). The racial makeup of the town is ...