16 Jan '14 16:44>2 edits
To sum up, for something to be scientific and science:
(1) for valid scientific study of events that are either impractical or impossible for anyone to reproduce, scientific reproducibility never includes reproducing the event itself and ONLY requires reproducing the evidence for the event as opposed to the event itself.
(2) it is totally irrelevant to how indirect the evidence is (both for in (1) and more generally ) for that has absolutely no baring on how scientific or unscientific the evidence is. Some evidence can make up totally scientific proof even if ALL of it is extremely indirect. There doesn't have to be an eye witness to an event that sees it at the exact moment it happened to have absolute scientific proof from indirect evidence that the event did take place. This, of course, includes evidence for events that happened a very long time ago before there existed eye witnesses.
(1) for valid scientific study of events that are either impractical or impossible for anyone to reproduce, scientific reproducibility never includes reproducing the event itself and ONLY requires reproducing the evidence for the event as opposed to the event itself.
(2) it is totally irrelevant to how indirect the evidence is (both for in (1) and more generally ) for that has absolutely no baring on how scientific or unscientific the evidence is. Some evidence can make up totally scientific proof even if ALL of it is extremely indirect. There doesn't have to be an eye witness to an event that sees it at the exact moment it happened to have absolute scientific proof from indirect evidence that the event did take place. This, of course, includes evidence for events that happened a very long time ago before there existed eye witnesses.