How do patient safety, quality of care, and economic interests contribute to the need to identify CDS best practi

Clinical Decision Support systems improve patient safety and reduce medical errors. Write a short paragraph discussing the following questions:

How do patient safety, quality of care, and economic interests contribute to the need to identify CDS best practices and to quantify effective CDS practice? What do the authors mean when they talk about the drive "to make CDS more of a science than an art"? How can this drive help in the effort to replicate and disseminate successful CDS systems? 

PLEASE 250 WORDS / NO PLAGIO ! THANKS