So first of all the stimulus states that we are dealing with an age old argument made by early astronomers: one which we now know to be incorrect. But our job is simply to choose an answer that contains information required for their argument (reasoning) to hold true. If we find an answer choice that we can negate and in turn ruin their argument, then that is the correct one.
The early astronomers use a premise that “if stars were farther (more than a few million miles) away, the stars would have to move at tremendously great speeds” [MTFMA --> MTGS] to conclude “stars are not more than a few million miles away” [ /MTFMA ]. To arrive at this conclusion is simple: contrapose the premise. /MTGS --> /MTFMA. That is what correct answer (D) gives us….It affirms “stars do not move at tremendously great speeds” [ /MTGS].
In plain English, if (D) is negated and stars DO move at tremendously great speeds then the astronomers’ reasoning is all wrong about how far away the stars are.
I hope I helped make this a little more understandable but if not you can check out this necessary assumption lesson:
Subscribe to unlock everything that 7Sage has to offer.
Hold on there, stranger! You need a free account for that.
We love that you want to get going. Just create a free account below—it only takes a minute—and then you can continue!
Hold on there, stranger! You need a free account for that.
We love that you came here to read all the amazing posts from our 300,000+ members. They all have accounts too! Just create a free account below—it only takes a minute—and then you’re free to discuss anything!
Hold on there, stranger! You need a free account for that.
We love that you want to give us feedback! Just create a free account below—it only takes a minute—and then you’re free to vote on this!
Subscribers can learn all the LSAT secrets.
Happens all the time: now that you've had a taste of the lessons, you just can't stop -- and you don't have to! Click the button.
6 comments
Anytime :-)
Definitely was! After thinking about it for a while I finally came to that conclusion myself! Thanks for the help!
So first of all the stimulus states that we are dealing with an age old argument made by early astronomers: one which we now know to be incorrect. But our job is simply to choose an answer that contains information required for their argument (reasoning) to hold true. If we find an answer choice that we can negate and in turn ruin their argument, then that is the correct one.
The early astronomers use a premise that “if stars were farther (more than a few million miles) away, the stars would have to move at tremendously great speeds” [MTFMA --> MTGS] to conclude “stars are not more than a few million miles away” [ /MTFMA ]. To arrive at this conclusion is simple: contrapose the premise. /MTGS --> /MTFMA. That is what correct answer (D) gives us….It affirms “stars do not move at tremendously great speeds” [ /MTGS].
In plain English, if (D) is negated and stars DO move at tremendously great speeds then the astronomers’ reasoning is all wrong about how far away the stars are.
I hope I helped make this a little more understandable but if not you can check out this necessary assumption lesson:
http://classic.7sage.com/lesson/how-to-find-necessary-assumptions/
Ahh! Well, if you wanted to purchase PT 70's explanations, you can do so here:
http://classic.7sage.com/addons/
Either way, I'm sure someone will explain it here in a bit. I don't think many people are on at this time.
I only have the LSAT starter =( I can't view the video
Have you seen J.Y.'s video on it yet?
http://classic.7sage.com/lsat_explanations/lsat-70-section-4-question-25/