1) they could in theory be provided 2) not necessarily: it's a matter of authority, that when ceases to exist, it ripples Edit: to an extent it applies to jour

1) they could in theory be provided 2) not necessarily: it's a matter of authority, that when ceases to exist, it ripples Edit: to an extent it applies to journalism. Nowadays, at best, you have citations that turn out to be fake and seldom who cites them gets updated