Law School Discussion

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - lipslikesugar

Pages: 1 2 [3]
21
Studying for the LSAT / Re: Prep test 25 - question 18 sectioin IV
« on: September 30, 2008, 11:14:32 AM »
This is justify the conclusion, and the correct answer choice should SUFFICIENTLY allow the conclusion to be properly drawn in conncetion with the premises given in the stimulus.  The conclusion is, "We cannot in any real sense mistreat plants."  You need to justify this conclusion using the premise given.  

Diagram:

Premise 1:  Plants do not have nervous system.

Plants -> ~NS (Nervous System)

Premise 2:  Having a nervous system is necessary to experience pain.

Pain -> NS

Conclusion: We cannot in any real sense mistreat plants.

Plants -> ~Mistreat

Based on the premises given and looking at the conclusion, you'll note that there is a "jump."  Something is missing and just with the information within the stimulus alone will not allow one to arrive at the conclusion that "Plant cannot be mistreated."  

Try connecting premise 1 and 2 by using the contrapositive for premise 2:

Premise 2 contrapositive: ~NS -> ~Pain

Connect premise 2 and 1: Plants -> ~NS -> ~Pain

Looking at answer choice D, it says "Only organisms that can experience pain can be mistreated."

D:  Mistreat -> Pain

Contrapositive: ~Pain -> ~Mistreat

Connect this contrapositive to the premise 1 and 2, and you get:

Plants -> ~NS -> ~Pain -> ~Mistreat

Or by transitive property:

Plants -> ~Mistreat (OUR CONCLUSION)

Note that choice D includes ALL ORGANISM, which is not necessary for us to reach the conclusion, but it is SUFFICIENT for us to reach the conclusion noted in the stimulus.  On the side note, other choice like "Only organisms with nervous system can be mistreated" can also work.

Choice B is incorrect since it's somewhat of a repeat of premise 2.  We needed something to bridge the jump between the premises and conclusion.  Hope this helps.

Thank you :)

22
Studying for the LSAT / Re: Prep test 25 - question 18 sectioin IV
« on: September 30, 2008, 11:07:57 AM »
We're told in the argument, that a nervous system is necessary for experiencing pain, so that is not an assumption (an unstated premise) on which the argument depends.

In the passage, we're told that we cannot mistreat plants. The reason why we cannot mistreat plants is because plants do not experience pain.

Let's say there were organisms that did not experience pain, but still could be mistreated. (The negation of choice "D")  If there were organisms that did not experience plain but still could be mistreated, then it's no longer true that we can not mistreat plants simply because they do not experience pain. (The conclusion of the  passage). A plant might be an organism that does not experience pain, but could still be mistreated.

In other words, for it to be true that we cannot mistreat plants simply because they do not experience pain, it also must be true that only organisms that experience pain can be mistreated.

Got it.
Thank you so much :)

23
Studying for the LSAT / Prep test 25 - question 18 sectioin IV
« on: September 30, 2008, 09:17:39 AM »
" Obviously, we cannot in any real sense mistreat plants. Plants do not have nervous system, and having a nervous system is necessary to experience pain."

Ok. I found two good answers (B and D)
B- (only organisms that have nervous systems can experience pain)
D- (only organisms that experience pain can be mistreated).

My choice was B. I was wrong.
Why is D a better choice?
Any thoughts?

 ???
Thank you!

24
Or it is just me?
 ??? ::)

I live in U.S. for only 6 years. Every time  I have to write an assignment I get nervous. What about you guys?

Pages: 1 2 [3]