Based on the passage, it can be concluded that the author and Broyles-González hold essentially the same attitude toward

megmcdermott on May 22, 2019

Rule #1, Example 2

So, I understand that 2 most statements can deduct a valid conclusion without having a sufficient and necessary condition but does it matter how we write it out. For example, in example 2 we have: A-most-B A-most-C and from this, we can make the deduction that B-some-C but could it also be written as C-some-B? This may be a silly question but I know when doing missing premise drills in the S&N lesson, placement matters significantly. Just want to know if it is the same for Quantifier deductions. Thanks!

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Ravi on May 23, 2019


This is a great question. "Some" statements are reversible, so yes,
B-some-C could also be written as C-some-B. However, "most" statements
are not reversible, so make sure that you don't reverse those.

The reason "some" statements are reversible is because some means "at
least one" and with B-some-C, you're saying that at least 1 B is a C.
If that's true, then by definition there has to be at least 1 C that's
a B, and that's why we can reverse "some" statements.

Does that make sense? Let us know if you have any other questions!