(24) Why may co-extensive propositions be converted simply?
(25) Describe the process of inference by contraversion.
9. PROBLEMS FOR ORIGINAL THOUGHT AND INVESTIGATION.
(1) What ground is there for the belief that immediate inference, so called, is merely a matter of the interpretation of propositions?
(2) Is there any difference between reasoning and inference?
(3) When the conclusion is reached that two rooms are of the same width, because each is five yards wide, what is the middle term?
(4) Put in equation form:
All teachers instruct,
John Jones is a teacher,
John Jones instructs.