I second this#feedback

what about the AND, i thought when there was an AND both conditions have to be in the answer choice, - Accepting them would have cost Checkers nothing and would have satisfied those of its potential customers who had purchased the coupon books,#feedback

lol

I second this, #feedback

#feedback I'm just wondering, how do we decide when to run an experiment or not. There are some questions that say experiment right, but others do not.

#feedback

How is the first sentence not context? Seems like it fits the context box since it is just giving us information.

lollllll

#help, if the contrapositive is only supposed to flip and negate the sufficient and necessary why did we flip and negate Premise 2 and the conclusion in both arguments?

I noticed that he mentions we make some of the assumptions true and others false to strengthen or weaken the argument. But what's the point of this? Aside from making the argument stronger and weaker, how is doing this helpful? Is it supposed to tell us something?