# The Lindy effect

If the probability distribution for the lifetime of something, follows a power law distribution (fat tails, then the expected value for additional life time after having lived for a time value $T_b$ will be an additional $T_b$.

The intellectual works life time follow a power law distribution that implies that an idea will have an additional survival time equal to the time it has been with us. Older ideas, music, books will survive longer as they get older.

The Lindy effect

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# Excellent on-line course on probability and statistics

See these courses, they are really very good:

# STAT 414 / STAT 415

https://onlinecourses.science.psu.edu/stat414/node/154  ….. as an example