If Norton is scheduled for the fifth performance, which one of the following could be true?
KyraOctober 15, 2018
How can L be fourth?
How can L be fourth if the rules say, "Lalitha performs third only if Norton performs fifth."
In this case, Norton was fifth. So, then Lalitha would have to be third according to the rules, right? Please advise.
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The rule you quoted, "Lalitha performs third only if Norton performs fifth," translates to
L3 - ->N5
"Only if" introduces the necessary condition, so that's how we know how to diagram this. We're told that Norton is 5th (N is in 5), so the necessary condition for the rule is satisfied.
What happens when the necessary condition is satisfied? the rule no longer matters. This means that L does not have to be in 3 in this particular scenario. L can be in 4 since the necessary condition for the rule has already been met.
Does this make sense? I highly recommend watching Mehran's video lesson on sufficient and necessary conditions if you haven't already. It sounds like you may not completely understand these concepts yet, so that video lesson will be an excellent resource for you guys.
If you would like further clarification, don't hesitate to let me know. We're here to help!
