There is not an agreement about the meaning of critical thinking. Moore and Parker defined critical thinking as the careful and deliberate determination of whether to accept, reject, or suspend judgment about a claim. The ultimate objective in critical thinking is to determine whether to believe or do when we receive a claim. The claims can be divided into two types, supported and unsupported claims. It is reasonable to accept an unsupported informative claim if it issues from a credible source and does not conflict with (1) what we have observed, (2) our background information or (3) other credible claims. A supported claim or an argument can be accepted if the premises are acceptable and the premises support the conclusion.