Unit1 Part 11. Critical thinking involves thinking about thinking2. The availability heuristic involves unconsciously assigning a probability to a type of event based on how often one thinks of events of that type.3. An issue simply raises a question.4. The part of an argument that provides a reason for accepting the other part is called the premise.5. A general rule we unconsciously follow in estimating probabilities is called a heuristic.Part 21. The conclusion of an ar