The most crucial "how to do it" requirement: the courage to go through with logical decisions

This is part of the last and most crucial "how to do it" requirement: the courage to go through with logical decisions—despite all pleas to give this or that product another chance, and despite all such specious alibis as the accountant's "it absorbs overhead" or the sale's manager's "we need a full product line." (Of course, these are not always unfounded alibis, but the burden of proof of every alibi rests with those that plead it.) It would be nice if I did, but unfortunately I know of no procedure or checklist for managerial courage.
--Peter Drucker

(specious
adjective FORMAL DISAPPROVING
seeming to be right or true, but really wrong or false:
a specious argument/claim
specious allegations/promises)