Hi, I posted this question in Astronomy & Cosmology but by advice of some users I post it here as it has some philosophycal side too: It seems to me that block time is an unavoidable consequence of Relativity. The fact that events that still lie in our future must have already been observed by other (hypotetical) observers seems to leave no room for escaping the fact that (at least some of) the events in our future "have already happened". To me (a layman) that seems to leave just 2 possibilities: either the future is already totally determined or we live in Everett's-Deutsch many-worlds multiverse. Or are there any other alternative interpretations? I know about quantum undeterminacy, but I still don't really get how does it get along with the seemingly unavoidable reality of block time derived from Relativity theory.