what are some questions we can ask based on what we learned in the lecture? What do we hope to accomplish by randomization? Non-predictability of the next assignment. Minimize or prevent subjective biases of the investigators. Increase the likelihood of comparability of different treatment/study groups regarding all factors may affect prognosis. Factors such as sex, age, race, and severity of disease. Note that randomization does not always guarantee comparability of the groups being studied