Quote:
Originally Posted by Greg Anos
How about instead of life + 50, make it the actuarial lifespan of the author + 50.
Actuarial lifespan = the average life span of people at the age of the author at the time of publication. Life insurance use this number all the time for policy calculations.
Example. Author X publishes a book at age 40. The actuarial life span of 40 year olds at that time is (say) 80 years. Copyright is then 80-40 = 40 years + 50 years, even if the author dies the next year.
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Too complicated and too inaccurate. My father is 95 and will be 96 in December. My mother lived to be 89. So saying 80 is inaccurate. Also, in your example, the copyright will last 90 years instead of 50.
life+50 is a known quantity.