The document discusses critical thinking and its application to ethics and bioethics. It defines critical thinking as the identification and evaluation of evidence to guide decision making. When applying critical thinking to ethics and bioethics, there may not be a single right answer and individuals' values and premises must be acknowledged. Various models for teaching critical thinking in ethics and bioethics are presented, including mapping out issues, stakeholders, values and reasoning. An example on using aborted female fetuses as a source of eggs for fertility treatment is provided to demonstrate applying critical thinking.