<prompt> Translate the following text to EnglishKwenye maneno mengine, Tunaomba maombi ya utulivu: Wataalamu wa uchumi wanahitaji ujuzi wa kufanya utafiti wa kiasi, maarifa yanayohitajika kwa utafiti wa ubora, na hekima ya kujua wakati kila moja ni sahihi na mipaka yake ni nini.  <response>: Instead, I believe we need a version of the serenity prayer: Economists need the skills to do quantitative research, the knowledge needed for qualitative research, and the wisdom to know when each is appropriate and what its limits are. 