Presently may not visualize in mind's eye, the stimulus pattern. Seeming inability to follow along if I don't sketch / write out stimulus. Love shallow dip method. Your empathetic teaching is refreshing. If 3 mins is too long what is the max one may spend on such questions?
When I started these, I was hating them so worried about conditional logic etc. Honestly I got a drill with 5/5 on normal, and 4/5 on the hard and hardest questions. I think the trick is to notice the similarities in structure with a question.
Stimulus: A species in which mutations frequently occur will develop new evolutionary adaptations in each generation. Since species survive dramatic environmental changes only if they develop new evolutionary adaptations in each generation, a species in which mutations frequently occur will survive dramatic environmental changes.
Answer: A person who is perfectly honest will tell the truth in every situation. Since in order to be a morally upright person one must tell the truth at all times, a perfectly honest person will also be a morally upright person.
It doesn't always work this way, but notice how the concept that appeared at the end of the conclusion also appeared at the beginning of the second premise?
All known deposits of the mineral tanzanite are in Tanzania. Therefore, because Ashley collects only tanzanite stones, she is unlikely ever to collect a stone not originally from Tanzania.
D) The only frogs yet discovered on Scrag Island live in the lagoon. The diet of all the owls on Scrag Island consists entirely of frogs on the island, so the owls will probably never eat an animal that lives outside the lagoon. (right one)
C) Frogs are the only animals known to live in the lagoon on Scrag Island. The diet of the owls on Scrag Island consists of nothing but frogs from the island. Therefore, the owls are unlikely ever to eat an animal that lives outside the lagoon.
In this instance, D is right because in the stimulus the word used is ONLY which refers to ALL, whereas in C just refers to "Of the owls" instead of all, even though both refer to eating solely frogs. One uses the exact same argument strength as the stimulus.
I'm sure there's a million other ways to solve these but this one I think is pretty reliable. There's another question about cats where it requires both biting and claws, and the corresponding argument also includes two concepts. You kind of gotta think that way a bit.
I found when they organized this lesson it was tricky (but maybe good) because they started with very hard questions, but honestly I found once I did a drill with easier questions I was able to find a simpler way to solve and understand these types, so when I got to the hard ones it was easier to replicate. Only took me 4 hours.
J.Y. makes the part to whole error in his logical reasoning here with shallow dive. If you have a 75-80% confidence rate of correctly eliminating each answer choice, then that does not all add up to having a pretty good chance at getting the answer right.
Imagine a bucket labeled "houses on River Street with a front yard"
all the brick houses on the street are in this bucket
most of the houses in the bucket have two stories
Flaw: But why would we conclude that most of the brick houses have two stories? We don't know how many of the houses in the bucket are brick vs other kinds of houses. In other words, we don't know if the sets 'brick houses' and 'two stories' intersect.
Evaluating answers:
A) no. the conclusion should be about the 'all' set (legislators) but the conclusion is about one of the 'most' sets (politicians)
B) no. need an 'all' set and this only has 'mosts'
C) no. the conclusion should be about the 'all' set (legislators). also, should not have any 'some' sets.
D) promising! on first glance, conclusion is about the correct 'all' group and other sets are 'most'
E) no. need an 'all' set and this only has 'mosts'
Second look at D). Yes, this matches the structure of the stimulus.
So basically it's just POE? It takes too long to map out each question so just knock out the ones that don't match and you're left with the right answer. Probably would be easier to just say that POE is the main way to solve Parallel.
Then headed to the answer choices and realized all of them had the first sentence as the conclusion, so I skipped the first half and started with the premises.
As I read each answer choice, I was barely even reading the words - I was just replacing the premises with "All A are B. Most B are C" in my head. As soon as I noticed the premises weren't matching up with what I was saying, I moved on!
For example, I read A as:
All A (legislators) are B (politicians).
Most A (legislators) are C (run for office).
And stopped right there - this already doesn't match the argument form I matched for the stimulus.
Kinda proud of myself here. Before starting 7Sage I had literally never even heard of formal logic, had absolutely no idea what A arrow B means, etc. Yet after going through this course, I got this question right on my own! Took ages, but still! Thank you 7Sage! Also, I am attending an inperson LSAT class and it's complete garbage compared to this.
#feedback I think there is a flaw in this diagraming.
The stim is not saying that:
All "brick houses(BH)" have "front yards(FY)" and most brick houses with front yards have "Two stories (2S)." That is what you diagrammed with:
BH→FY‑m→2S
What the stim is saying is that on River street: All brick houses (BH) have front yards (FY) ALSO, most Houses with front yards have 2 stories(2S)
We have no idea how many houses are on River Street nor what percentage of them are brick. It is absolutely possible that the street has 100 houses, all 100 of them could have front yards, but only 1 of them is Brick. That means that we can reasonably have a situation where most houses with front yards have 2 stories and NONE of them are brick houses. This is why we cannot infer anything about the number of floors in brick houses from the information provided.
Should it not be:
Domain: River Street
Brick + House → FY
House + FY ‑m→ 2S
(Brick + House) and (House + FY) have no guaranteed overlap and cannot be linked.
Got the answer by just looking for the choice that had « most, most and all » in the arguement. Not sure if this will work for future questions though.
#feedback is it correct, when using shallow-dive analysis, to mainly focus on matching the "some" "most" "all" qualifiers? I'm seeing that as the main trend as called out in the video, but want to be careful before applying this throughout!
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113 comments
"hopefully you aren't writing these out on paper and you are just visualizing it in your mind....."
Me as soon as I read this question:
Presently may not visualize in mind's eye, the stimulus pattern. Seeming inability to follow along if I don't sketch / write out stimulus. Love shallow dip method. Your empathetic teaching is refreshing. If 3 mins is too long what is the max one may spend on such questions?
hahahahahhhhahhaaaaaaaaaaaaaaaaaaaaaaa
is it okay to conflate brick house and house? I translate this stimulus as:
domain: has front yard
premise: All brick house are house (All A are B)
Most house have two stories (Most B are C)
Therefore, Most brick house have two stories (Most A are C)
Anddd this is my cue to log off for tonight
When I started these, I was hating them so worried about conditional logic etc. Honestly I got a drill with 5/5 on normal, and 4/5 on the hard and hardest questions. I think the trick is to notice the similarities in structure with a question.
Stimulus: A species in which mutations frequently occur will develop new evolutionary adaptations in each generation. Since species survive dramatic environmental changes only if they develop new evolutionary adaptations in each generation, a species in which mutations frequently occur will survive dramatic environmental changes.
Answer: A person who is perfectly honest will tell the truth in every situation. Since in order to be a morally upright person one must tell the truth at all times, a perfectly honest person will also be a morally upright person.
It doesn't always work this way, but notice how the concept that appeared at the end of the conclusion also appeared at the beginning of the second premise?
All known deposits of the mineral tanzanite are in Tanzania. Therefore, because Ashley collects only tanzanite stones, she is unlikely ever to collect a stone not originally from Tanzania.
D) The only frogs yet discovered on Scrag Island live in the lagoon. The diet of all the owls on Scrag Island consists entirely of frogs on the island, so the owls will probably never eat an animal that lives outside the lagoon. (right one)
C) Frogs are the only animals known to live in the lagoon on Scrag Island. The diet of the owls on Scrag Island consists of nothing but frogs from the island. Therefore, the owls are unlikely ever to eat an animal that lives outside the lagoon.
In this instance, D is right because in the stimulus the word used is ONLY which refers to ALL, whereas in C just refers to "Of the owls" instead of all, even though both refer to eating solely frogs. One uses the exact same argument strength as the stimulus.
I'm sure there's a million other ways to solve these but this one I think is pretty reliable. There's another question about cats where it requires both biting and claws, and the corresponding argument also includes two concepts. You kind of gotta think that way a bit.
I found when they organized this lesson it was tricky (but maybe good) because they started with very hard questions, but honestly I found once I did a drill with easier questions I was able to find a simpler way to solve and understand these types, so when I got to the hard ones it was easier to replicate. Only took me 4 hours.
J.Y. makes the part to whole error in his logical reasoning here with shallow dive. If you have a 75-80% confidence rate of correctly eliminating each answer choice, then that does not all add up to having a pretty good chance at getting the answer right.
stimulus:
all A are B
most C that are B also are D
so most A are D (FLAWED)
stimulus stated differently:
Imagine a bucket labeled "houses on River Street with a front yard"
all the brick houses on the street are in this bucket
most of the houses in the bucket have two stories
Flaw: But why would we conclude that most of the brick houses have two stories? We don't know how many of the houses in the bucket are brick vs other kinds of houses. In other words, we don't know if the sets 'brick houses' and 'two stories' intersect.
Evaluating answers:
A) no. the conclusion should be about the 'all' set (legislators) but the conclusion is about one of the 'most' sets (politicians)
B) no. need an 'all' set and this only has 'mosts'
C) no. the conclusion should be about the 'all' set (legislators). also, should not have any 'some' sets.
D) promising! on first glance, conclusion is about the correct 'all' group and other sets are 'most'
E) no. need an 'all' set and this only has 'mosts'
Second look at D). Yes, this matches the structure of the stimulus.
This is going to be my down fall
Really loved this lesson!
So basically it's just POE? It takes too long to map out each question so just knock out the ones that don't match and you're left with the right answer. Probably would be easier to just say that POE is the main way to solve Parallel.
this is amazing, well done w/ the quick dive examples.
"okeey" started to annoy
The way I did this one correctly and quickly:
First wrote a simple map of the stim.
All A are B.
Most B are C.
------
All A are C.
Then headed to the answer choices and realized all of them had the first sentence as the conclusion, so I skipped the first half and started with the premises.
As I read each answer choice, I was barely even reading the words - I was just replacing the premises with "All A are B. Most B are C" in my head. As soon as I noticed the premises weren't matching up with what I was saying, I moved on!
For example, I read A as:
All A (legislators) are B (politicians).
Most A (legislators) are C (run for office).
And stopped right there - this already doesn't match the argument form I matched for the stimulus.
Hope this makes sense lol
lemme tell ya something, this ain't it
Just started and I already hate this section with every fiber of my being
Kinda proud of myself here. Before starting 7Sage I had literally never even heard of formal logic, had absolutely no idea what A arrow B means, etc. Yet after going through this course, I got this question right on my own! Took ages, but still! Thank you 7Sage! Also, I am attending an inperson LSAT class and it's complete garbage compared to this.
#feedback I think there is the flaw in the diagramming as well--- it's not a →b‑m→c, it's a→b and [superset of a] ‑m→ c
#feedback I think there is a flaw in this diagraming.
The stim is not saying that:
All "brick houses(BH)" have "front yards(FY)" and most brick houses with front yards have "Two stories (2S)." That is what you diagrammed with:
BH→FY‑m→2S
What the stim is saying is that on River street: All brick houses (BH) have front yards (FY) ALSO, most Houses with front yards have 2 stories(2S)
We have no idea how many houses are on River Street nor what percentage of them are brick. It is absolutely possible that the street has 100 houses, all 100 of them could have front yards, but only 1 of them is Brick. That means that we can reasonably have a situation where most houses with front yards have 2 stories and NONE of them are brick houses. This is why we cannot infer anything about the number of floors in brick houses from the information provided.
Should it not be:
Domain: River Street
Brick + House → FY
House + FY ‑m→ 2S
(Brick + House) and (House + FY) have no guaranteed overlap and cannot be linked.
Did I misinterpret the stim in some way?
"Everyone has a plan until they get hit in the face."
This was a great lesson! I feel like I really get it and how to apply it
Got the answer by just looking for the choice that had « most, most and all » in the arguement. Not sure if this will work for future questions though.
lord save me
#feedback is it correct, when using shallow-dive analysis, to mainly focus on matching the "some" "most" "all" qualifiers? I'm seeing that as the main trend as called out in the video, but want to be careful before applying this throughout!