I have a question on how the video comes to the contrapositive of the answer choice.
"there are many records of major meteor impacts that do not seem to have been followed by mass extinction"
in the stimulus
becomes
""...then all major meteor impacts would be followed by mass extinction"
I understand we need
P ---> -CCL
or
CCL---->-p
And that this is to be P3. But how is all the contrapositive of many? Many could potentially be All. Shouldn't the right answer here be not many aka none, no, etc?
