Susan will start working at home if, but not only if, Peter's mother helps with the rent

Dictionary:
M = Peter's mother will help with the rent
S = Susan will start working at home

If Peter's mother helps with the rent Susan will start working at home.  

I dunno

i mean there's if and only if for a reason, so I assume if means the same as if but not only if. :/

Post edited at 9:11 am on Sep. 19, 2008 by Permious

-------
jesus christ was a cunt and a rapist

M → S

-------
╔╬╝ -- 1000 needles!
_╠╗
-------

---

M -> S?  

If Peter's mother helps with the rent Susan will start working at home.

I dunno

i mean there's if and only if for a reason, so I assume if means the same as if but not only if. :/

---

from wiki

"A ⇒ B means if A is true then B is also true; if A is false then nothing is said about B."

so yeah, if that cunt doesn't help with the rent, it says nothing about whether or not Susan will work at home

-------
jesus christ was a cunt and a rapist

---

"A ⇒ B means if A is true then B is also true; if A is false then nothing is said about B."

so yeah, if that cunt doesn't help with the rent, it says nothing about whether or not Susan will work at home

---

Actually, that one looks more correct.

-------
╔╬╝ -- 1000 needles!
_╠╗
-------

---

I'm no logician, but can't that just be an if/then, since M guarantees S?

M → S

---

m doesn't guarantee s though.

-------
Lally (100)
zombie4life (3 - f*cking cheapskate)
im with stupid
(1)

---

Quote: from Khadgar at 9:12 am on Sep. 19, 2008

---

I'm no logician, but can't that just be an if/then, since M guarantees S?

M → S

---

 

m doesn't guarantee s though.

---

Susan will Start working at home if Peter's mom pays the rent

why doesn't M guarantee S? :S

i hate this shit so much :/

Post edited at 9:19 am on Sep. 19, 2008 by Permious

-------
jesus christ was a cunt and a rapist

---

Quote: from Khadgar at 9:12 am on Sep. 19, 2008

---

I'm no logician, but can't that just be an if/then, since M guarantees S?  

 M → S

---

m doesn't guarantee s though.

---

Sure it did.

Susan will start working at home if, but not only if, Peter's mother helps with the rent.

The "but not only if" part just says that this is not the only condition which would cause the outcome.

So, saying M → S (if M, then S) is correct, but saying that M ≡ S (if and only if M, then S) is not.

-------
╔╬╝ -- 1000 needles!
_╠╗
-------

The Oath, I'm reading the page you sent me...

Post edited at 9:23 am on Sep. 19, 2008 by DayXTripper

-------
Lally (100)
zombie4life (3 - f*cking cheapskate)
im with stupid
(1)