I think this is a nice and useful diagram for comparing the support on these question types. I do think, though, that Strengthen really spans the entire spectrum on this diagram. For example, there are Strengthen questions were the correct answer merely defends the argument against a possible attack. You're given an argument that has several potential "wrecking balls," and the correct answer choice simply defends against one of those "wrecking balls." This does leave the argument in a slightly better position, but there could still be other "wrecking balls" left unaddressed. On the other hand, you could get a Strengthen question, and one of the answer choices makes the conclusion valid. Proving the conclusion true certainly strengthens the argument (it's the ultimate strengthener!), but you wouldn't eliminate that answer choice because it provides too much support (so much that it would even be correct if the question stems asked for a SA instead). I guess I'm just saying a correct answer choice to a Strengthen question can strengthen the argument just a little, or so much so that it makes the argument valid.

@ When you simulate flex on a PT, does the grading translate as well, or does it get weird since it's missing an originally graded LR section? Also, how do you add a random section to simulate the experimental? Do you just open another 7Sage tab with a random section pulled up and go over to it at some point during the flex-simulated test? Or is there a way to add a random section? Thank you!