I'm currently an Economics MA student doing a referee report on a paper that employs a dated empirical method. This particular method was originally created in 1980 but then improved upon in 1998 by other researchers, after they had discovered certain issues with it.
This got me thinking about how exactly those on the cutting edge of research seem to lag behind by over a decade (or more) in method and still manage to get published.
This is concerning because it shows that published researchers make mistakes and don't review all relevant research before publishing. I can imagine that in the hard sciences and medicine this would happen also, which is especially concerning knowing that those on the cutting edge could be decades behind in knowledge which has been around for a while.
Is this acceptable? If so, why?