to another learner by critically reading his or her analysis and address whether or not

There are numerous case studies on Michael Porter’s Five Competitive Forces Model. Find one and summarize the case study to others in no more than one or two paragraphs.  Respond to another learner by critically reading his or her analysis and address whether or not you agree (answering why, or why not), using arguments you have either read in the text, slides or online. Remember to reference the source so the other reader can review the case study as well to formulate his or her response to you.