# Page 22 of the Logic Games Bible...

#### Marcia

##### Page 22 of the Logic Games Bible...
« on: June 25, 2005, 01:10:01 PM »
Just want to say first that I'm glad I found this site.  It's very valuable.

My question is-
On pg. 22 of the LGB at the upper left hand corner, what do they mean when they say "To diagram a statement containing "unless," convert the variable modified by "unless" into the necessary condition.  Take the remainder, negate it, & convert it into the sufficient condition.  The same technique applies to statements containing "until," "except," and "without."

I'm very confused by this statement.  Could someone explain and give me an example?

#### Marcia

##### Re: Page 22 of the Logic Games Bible...
« Reply #1 on: June 25, 2005, 01:11:39 PM »
Oh and I did read it over like 3x and I was just confused by this unless stuff.

#### guyboston

• 129
##### Re: Page 22 of the Logic Games Bible...
« Reply #2 on: June 25, 2005, 01:17:48 PM »
A conditional statement is of the form

Sufficent --> Neccessary.
If Sufficient then  Necessary

If you have a statement.  A unless B.

It becomes

A --> B

Ex. they use

Unless you study, you won't get an A

A= you won't get an A
B= Study

A = Sufficent = You will get an A
B= Necessary = Study

so it becomes

If you get an A then you studied.

#### Marcia

##### Re: Page 22 of the Logic Games Bible...
« Reply #3 on: June 25, 2005, 02:54:08 PM »
Thanks, I think I just need to look at it when I have a clear head and then maybe it will make more sense.

A conditional statement is of the form

Sufficent --> Neccessary.
If Sufficient then  Necessary

If you have a statement.  A unless B.

It becomes

A --> B

Ex. they use

Unless you study, you won't get an A

A= you won't get an A
B= Study

A = Sufficent = You will get an A
B= Necessary = Study

so it becomes

If you get an A then you studied.