[TopQuark]

There is nothing wrong with that practice: please see #19.

[lelio]

But we're not talking about having to read Newton's works to write down F=Ma, its more like siting a paper on global warming and then taking a study from that as gospel w/o reading it. Compounding of errors and all that. Perhaps the underlying paper made some assumptions that the 2nd paper doesn't accurately account for and you're making totally different ones in your own paper.
Its the academic version of Telephone.