Diagramming Double-Not Arrows

[avengingangel]

I'm understanding / processing everything else in this section, but the paragraph at the middle of the page on pg. 207 is really throwing me off and I can't quite digest it, or even understand what it's trying to say. Could anyone help me out ?

"If you diagram statements with the single arrow and slash in the first diagram, you will not be making a mistake. We raise the issue of the double-not arrow because later when we discuss Formal Logic, you will need to know the meaning of the sign. The double-not arrow is a conditional symbol, and in Formal Logic there will be times when you must know the meaning and use of the symbol in order to efficiently solve a problem."

Is this saying that, right now, if you don't use/understand the double-not arrow, that's fine and not wrong. But there will be times later on, in more complex questions (this "Formal Logic" type, I'm assuming..) when it WILL be necessary to understand and use the double-not arrow in order to find the correct answer?

[Dave Killoran]

Hi Angel,

Thanks for the question! Some people have realty difficulty with double-arrows at first, so this is a note saying that's it's ok to use a single arrow representation for the time being. Later, the book will push you to use a double-arrow, but at that point most people are in a better place to handle it.

The key is that if someone is shaky with double-arrows, they can move on in the book without freaking out over not using them just yet

Thanks!