Law School Discussion

"Only if" conditions on the LSAT

"Only if" conditions on the LSAT
« on: November 28, 2004, 10:34:19 AM »
How are we to interpret/diagram "only if" conditions? E.g., "Bill will make pasta only if he has tomato sauce." Does this mean that if Bill has tomato sauce he will certainly make pasta, or does it mean that if he makes pasta then he certainly has tomato sauce. Does "only if" imply a necessary condition?

Re: "Only if" conditions on the LSAT
« Reply #1 on: November 28, 2004, 10:57:15 AM »
Yes, it's a necessary condition.  If he makes pasta then he has tomato sauce, or conversely, if he has no tomato sauce he won't make pasta.