- Thu Oct 07, 2021 2:12 pm
The issue here is that we don't diagram causal arguments the same way we diagram conditional ones, andwer123. You have the relationships right, but in our methodology we would not suggest that you diagram them in that way, because then it can get very easy to confuse a conditional claim with a causal one, and from there it's an easy step to selecting wrong answers.
You said you were confused by the statement about migrations and rapid advancement, but your diagram of that was correct, so I think you understood it better than you thought you did! Nice work! That last claim is indeed conditional, while the rest of the evidence is causal. Shifts in climate CAUSE migrations, which CAUSE intermingling of ideas. That intermingling is NECESSARY for rapid advances, but there is no indication that intermingling causes advances or vice versa. That's why we cannot select answer E, for example - a migration will cause intermingling of ideas, but that intermingling might not be accompanied by rapid advances, because the intermingling of ideas is necessary for rapid advances but may not be sufficient for them.
Adam M. Tyson
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