[rolph]

this is why we dont do one offs.

there has to be independently reproducable results from independent research over time until the variation of outcomes is known, for some sciences this can be a very long process for very unscientific reasons.

one thing not addressed is that the isotopic elements of the meteoric fragment may have been incorporated by a terrestrial biological or chemical process

[TallGuyShort]

Right - but reproducibility is distinct from peer review. Stuff that has been peer reviewed is very often not reproduced (or reproducible).

[rolph]

whenever the methodologies of a scientific experiment are repeated the underlying principle is preserved if there is no signifigant deviation of observed results from expected results.

for example PCR has a lot of credit, the central dogma of molecular genetics has a lot of credit, but there are exceptions being found in very niche cases such as reverse transcriptase and the HIV virus.

those experimental protocols that have been reviewed and found to be non deficient at the time of review are often repeated in principle as they are used for a common tool.