Having fun with this: The elsewhere-mentioned "not making a big deal out of your success" might be a reasonable filter, because while a time traveler might alm

Having fun with this: The elsewhere-mentioned "not making a big deal out of your success" might be a reasonable filter, because while a time traveler might almost unavoidably produce surprising advancements, they also wouldn't necessarily try to draw attention to themselves. You know, lest they fall awry of any wandering time cops. (Maybe not even to hide from them per se, given that for the hypothetical fun of it, we believe we could find them, but just to avoid some kind of prime-directive-rule against egregious self-enrichment, i.e. a "no playing god" kind of thing.)