What are 3 criteria that make a good experiment?

(1) singularity - it tests only one variable in the situation (2) reproducibility - it can be re-done by other scientists to verify the results (3) utility - the answer matters to human life in some way While most would agree with the first two elements of a "good experiment" listed above, I'm not sure you would find much consensus on the concept of "utility." Whether the result of an experiment is ultimately deemed "useful" to human life has little bearing on the methodology and scientific rigor with which an experiment is conducted. On the other hand, some would say that scientific integrity ("honesty") is a necessary ingredient in any good experiment, while others would say that a good experiment must either prove or disprove a hypothesis...which is, after all, the whole point of conducting the experiment in the first place.