<prompt> Translate the following text to EnglishMtu ni kushawishiwa kusema kwamba lazima kuwe na utafiti defable, lakini tatizo ni dhahiri- Baadhi ya makampuni binafsi bila shaka msingi mikataba juu ya uamuzi wa wasimamizi wanaohusika.  <response>: One is tempted to argue that there should be a defensible study, but the problem is obvious- some private firms undoubtedly base contracts on the judgment of the managers involved. 