especially careful in conclusion to summarize the proofs that you have
presented.
* * * * *
The conclusions that you reach in your arguments must be based upon
statements that are true. In the following, some of the statements are
false, and therefore the conclusions based upon them are false. Point
out wherein the falsity consists. In others of the following, irrelevant
matter has been introduced. Point it out, explaining why it is
irrelevant.