Math teacher here. The problem is that I'm teaching a course where students are being asked to write online and then respond to each other. Suppose a student responds to disagree with a single point from the original post. With this type of writing, is it typically understood that they
a. agree with all the other points in the post
b. disagree with all the other points in the post, or
c. have no opinion (or at least have expressed no opinion).
I remember reading once, somewhere, that it's either choice a or b, but I can't remember which. On the other hand, if I were to apply math logic, it would clearly be c.
P.S. Is this expository writing? That's the tag I added, anyway.