Cellular Technology Changes

Imagine for a moment, the year is 1980. You are sitting beside a lake sketching the landscape and someone delivers a message to you that your mother has called and wanted to know if you needed any extra food dishes for the family dinner that is planned for this evening. Now consider the possibilities of dropping your work to run in and return the call in your attempt to catch her before she departs for the store to get items she doesn't need. This scenario has more than likely been played out hundreds if not thousands of times all over the world.
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