Learning from guys who had no power tools but were craftsman in the day my learning experience was not to re use nails or screws for many reasons.
Got into a huge argument with a College Grad who says, that because technology has gotten so much better screws and nails today will last much longer than the old.
Over the years have seen heads snapping off new screws the build up heat and deformation of both nails and screws. Plus it also depends on the material being used.
Is there an article or code anywhere where I might settle this once and for all.