Assuming inexpensive, destination-unlimited time machines

[james_davis_nicoll]

[Poll #1680849]

Comments

[marydell.livejournal.com]

Unless we also have inexpensive, perfectly-accurage geneology, the risk of rescuing one's own ancestors from abusive situations and thereby causing oneself to no longer exist is too great. And one's ancestors, left orphaned by one's ceased existence, might be placed into abusive foster care situations, rendering one's self-sacrifice moot.