I don't unstand how this or has it been brought up?
First, there are things called "Wills" and if someone want to do this, they would be the ones telling the "Cutter" what to cut. With 1000s upon 1000s of hours to edit, with a date stamp, time code, one could give close details as to which moments are to be shown.
Birth
3 to 5 momnents from 5yrs old to 13,
first love (Maybe)
graduation of high,
graduation of college
the moment fell in love with wife
birth of kids
moment of success at life or job
"Lets make some LSD" Dr Walter Bishop