The author uses the word "immediacy" (line 39) most likely in order to express

martinjr on August 2, 2018

Example 8

I understand why D was the correct answer choice but when working out the diagram for D i had an issue knowing whether FL was the sufficient with M as necessary or M was the sufficient with FL as the necessary. Any help?

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Anita on August 2, 2018

@martinjr Absolutely. You can essentially reword that one into "If flight late, then miss meeting." If you tried it the other way, it doesn't make sense. It helps with the If X then Y thinking to build your sufficient and necessary. Does that help?

martinjr on August 2, 2018

I find it does help to think of it in terms of "If X then Y" the only problem is that sometimes I overthink it because technically you could've also worded that statement to say "If I missed my meeting, then the flight was late" and that does make sense to me as well.

Anita on August 4, 2018

@martinjr It's important to look for "only." That is, is the ONLY reason we would miss the meeting is that the flight was late? If so, then "If miss meeting, then flight was late" works. If we only know that if the flight is late then you'll miss the meeting, it's "If flight late, then miss meeting," not the other way around. Keep practicing and it'll click!