conditional logic question

[caryn716]

The indented rules say that Frank demonstrates exactly one task before Gladys demonstrates any of the tasks. One of the questions asks "If Gladys demonstrates plowing immediately before Frank demonstrates threshing, which of the following must be true?"
Because it switches the two people's placements, to answer this would you have to start from scratch and not take into account any of the previously known information?

[maryadkins]

We know that Frank and Gladys each demonstrate two tasks. Frank demonstrates exactly one of them before Gladys does any.

This means, if we think about them as F1 and F2, G1 and G2:

F1 -- All Gs (G1 and G2)

What about F2?

If we try to put F2 before all the Gs, Frank wouldn't be demonstrating exactly one before Gladys demonstrates any. He'd be demonstrating two. Exactly means exactly on the LSAT, not at least!

Where is left for F2 to go? After at least the first G1. So:

F1--G1--F2/G2 (we don't know about where the second letters go as long as they're after the first F and the first G).

If G demonstrates something before F, that means what F is in play here? The second one! If it were the first one, G couldn't be before F. That means that there is another F--the first F--before this GF block:

F--GF

The rules don't actually contradict... and they never will. If it seems like you're being asked by a question to set one of the constraints aside, you're missing something!

I hope this helps. Please let me know if you're still confused!

[jorgesalarcon]

The indented rules say that Frank demonstrates exactly one task before Gladys demonstrates any of the tasks. One of the questions asks "If Gladys demonstrates plowing immediately before Frank demonstrates threshing, which of the following must be true?"
Because it switches the two people's placements, to answer this would you have to start from scratch and not take into account any of the previously known information?

Thanks for asking. I had a similar question