Just wanted to say the visual example was super effective, thank you for that! I've been trying to make visuals for a lot of the more complicated topics we've covered and used a similar beaker analogy for sufficiency/necessity. I'd love for more lessons to include visual comparisons like these!
Since the some relationship is reversible, this means that some C are A, can you please explain how that works with the bucket visualization or why some cafes that serve tea source their beans from BMR? I am confused because there were no Cs in the A bucket/teas in the BMR bucket, so I don't understand why the relationship is reversible in these cases. Thanks!
I recommend having a tab with the negating lessons for some most all and just regular statements and doing it, asking yourself self how they got to it in the lesson and how you work it out and write out the translation. Then when you go through the answers for all three pages, it makes his reasoning easier to understand. I find I still made mistakes by forgetting about the earlier indicators, but it helps with the confusion if you do not understand at first like me. Hope this helps.
The first argument in this lesson has a word missing. Instead of reading "...some students in Mrs. Stoops are invited...," it should read, "...some students in Mrs. Stoops' class are invited..."
That last paragraph describing the scoops and buckets is one of the best visual/written explanations I have seen to explain relationships and intersectionality. If more examples had explanations like that that are easy to visualize, it will greatly improve test taker's understanding of the topic and why it is important. #feedback
"Some cafes that serve decaf source coffee beans from Blue Mountain Roasters. All cafes that serve decaf also serve tea. Therefore, some cafes that serve tea source coffee beans from Blue Mountain Roasters." The first and third sentence from this paragraph need revision, maybe it was meant to say "are from Blue Mountain Roasters"? #feedback
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43 comments
If this helps: The first 3 three formal arguments:
1) If A → B,A,∴ B 2) If A → B, not B,∴ not A
3) If A → Band B → C then A → C.
this visual is great
If I had just watched this before doing my drill set I would've gotten a question right
formal argument 4 - some before all:
a b
b-> c
--------
a c
Just wanted to say the visual example was super effective, thank you for that! I've been trying to make visuals for a lot of the more complicated topics we've covered and used a similar beaker analogy for sufficiency/necessity. I'd love for more lessons to include visual comparisons like these!
He's flyingggg through this one. Had to slow down the video.
the bidirectional some is remind me of the subscript letters we made use of in other lessons. Do they function the same way?
John is in Group A
can be expressed
John > Group A
AND would be just as true to say
Johnₐ
Is this accurate?
The bucket visualizer was actually super helpful.
Since the some relationship is reversible, this means that some C are A, can you please explain how that works with the bucket visualization or why some cafes that serve tea source their beans from BMR? I am confused because there were no Cs in the A bucket/teas in the BMR bucket, so I don't understand why the relationship is reversible in these cases. Thanks!
grok
I recommend having a tab with the negating lessons for some most all and just regular statements and doing it, asking yourself self how they got to it in the lesson and how you work it out and write out the translation. Then when you go through the answers for all three pages, it makes his reasoning easier to understand. I find I still made mistakes by forgetting about the earlier indicators, but it helps with the confusion if you do not understand at first like me. Hope this helps.
For anyone else who was confused by the bucket/scoop analogy, this is how I visualized it:
I went back to JY's subset superset circle diagram for the B → C relationship, so you have superset circle C subsuming subset circle B.
At the bottom, where the edges of B and C line up, there is overlap with the intersecting set A. That little cross-section is A ←s→ C.
Some A are B. B is sufficient for C. So some A are triggering the necessary condition C, and then we get A ←s→ C.
Why was a domain explicitly stated for example 2, but not for the initial example? What changed between the two examples?
If this confuses you, look up the some train from the logical reasoning bible and it explains this type of argument really well
If you want to see formal arg. 4 in action, look at this question
https://7sage.com/lsat_explanations/lsat-116-section-3-question-21/
For the second example... Would it be correct to also say:
Premise 1: D Some BMR
Premise 2: D->T
--------------------------
Conclusion: T Some BMR
The whole buckets and scoops analogy: here is how I understand it. Imagine that A is sugar cubes, B is an espresso shot and C is foamed milk
If you add "some" sugar (A) to an espresso (B), then it becomes espresso with sugar (B).
Then if you add the espresso with sugar (B) to foamed milk (C), it becomes a latte (C).
So you can say that there is some sugar (A) in the latte (C), because of the espresso with sugar (B) that was added to it.
Let me know if this makes sense to you:)
some cats like milk, if you like milk you have blue eyes, some cats have blue eyes :)
#feedback
The first argument in this lesson has a word missing. Instead of reading "...some students in Mrs. Stoops are invited...," it should read, "...some students in Mrs. Stoops' class are invited..."
That last paragraph describing the scoops and buckets is one of the best visual/written explanations I have seen to explain relationships and intersectionality. If more examples had explanations like that that are easy to visualize, it will greatly improve test taker's understanding of the topic and why it is important. #feedback
"Some cafes that serve decaf source coffee beans from Blue Mountain Roasters. All cafes that serve decaf also serve tea. Therefore, some cafes that serve tea source coffee beans from Blue Mountain Roasters." The first and third sentence from this paragraph need revision, maybe it was meant to say "are from Blue Mountain Roasters"? #feedback
scoop