okay I was a little confused through this whole section because I kept thinking the contrapositive is the negation of a conditional statement. I just swallowed my confusion tho and kept pushing through. it wasn't until the skill builder that I understood the difference between the contrapositive and negation. I think it'd be helpful if y'all had a little section explaining the difference. #feedback

#feedback Okay, is the translated into English of the contrapositive the valid statement we are looking for? it only makes sense when I read the explanation with the final contrapositive lawgic translated into English.

So for a lot of these, I just used the conclusion indicator method to determine the conclusion. Sometimes the 'why should I believe this' hack was a little unclear in which one was the conclusion vs premise like in 8.1. I tried using the 'why should I believe this' and got tripped up. Luckily hence was there to remind me. The same thing for 10.1. I used the 'why should I believe this' and both statements seemed to support each other, meanwhile the conclusion was in the statement.

okay i recognized that this was a sufficient/necessary mistake. they confused the sufficient condition approx age for the necessary being comfortable to approach. but the phrasing of the answer choices made it so hard to see that. ultimately being the same age is sufficient for someone to be comfortable for them to approach someone; it is one of many causes to be comfortable to approach someone; there can be other causes. i think (E) is pointing that out, that we aren't considering cases when one is not the same age as the person they are approaching. this is a different sufficient condition. i guess i am confused because isn't a rule of conditional logic that the negation of the sufficient doesn't tell us anything about the necessary???

im so mad for these owls...