Diagraming S & N
Started by
Dave
· started 2014-12-11 11:06
· last activity 2014-12-11 20:16
· 1 reply
I diagramed the S as completely efficient (CE) and the N as understood words (UW). Made the contrapositive as not UW - - -Not CE.
Premise as not perfect auditory and conclusion as not UW. Then I got stumped. Where did I go wrong?
Thanks
-
Naz
· 2014-12-11 20:16
Okay so let's diagram this.
"If a spoken language is completely efficient, then every possible permutation of its basic language sounds can be an understandable word."
P1: CE ==> EPU (Completely efficient) ==> (Every permutation understandable)
not EPU ==> not CE
"If the human auditory system is an imperfect receptor of sounds, then it is not true that every possible permutation of a spoken language's basic language sounds can be an understandable word."
P2: IRS ==> not EPU
EPU ==> not IRS
We are asked what must be true.
Well, we can connect "P2" to the contrapositive of "P1" like so: IRS ==> not EPU ==> not CE to conclude: IRS ==> not CE, which is exactly what answer choice (E) states: "If the human auditory system is an imperfect receptor of sounds, then a spoken language cannot be completely efficient."
Hope that clears things up! Please let us know if you have any other questions.
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