Question:
Based on the premise "chapter, we turn to two basic What do we need to take into account with regard to the objectivity of case studies and their generalizability?", can we conclude that "The are no objectivity problems that must be taken into account."?
****
Answer:
no

Question:
Based on the premise "when we have enough calls from you you will receive in the mail a numbered certificate for your calls and and explanation how to redeem", can we conclude that "We need you stop calling us because we're not going to send you anything."?
****
Answer:
no

Question:
Based on the premise "Was it worth it?", can we conclude that "Was it useful?"?
****
Answer:
it is not possible to tell