The very term "best practice" is such a loaded term. It implies:
1) empirical measurement compared to a large number of alternatives ... the empirical measurement or study is never mentioned: because they do not exist
2) the best practice is valid in all measurements and criteria of comparison: performance, elegance, simplicity, correctness
3) since there is no data, the reasons for why the practice was designated best are rarely even explained
4) nor are the circumstances or individual or source of "best practice" detailed
5) it will always be the best practice: it is the BEST! It CANNOT be improved.
So we have an unsubstantiated, unargued, unsourced, non-authoritative, exaggerated declaration in virtually every case of "best practice"
1) empirical measurement compared to a large number of alternatives ... the empirical measurement or study is never mentioned: because they do not exist
2) the best practice is valid in all measurements and criteria of comparison: performance, elegance, simplicity, correctness
3) since there is no data, the reasons for why the practice was designated best are rarely even explained
4) nor are the circumstances or individual or source of "best practice" detailed
5) it will always be the best practice: it is the BEST! It CANNOT be improved.
So we have an unsubstantiated, unargued, unsourced, non-authoritative, exaggerated declaration in virtually every case of "best practice"