rancid rollouts

Definition. Rancid rollouts are stemless presentational items, that are often either trivial and / or redundant.
An example of rancid rollouts is the statement of the Law of Cosines 3 times, whereas the true spirit of Mathematics would be to state it only once, with the understanding that the other 2 cases can be obtained simply by re-labeling the triangle.
keywords: education, critical thinking, deduction