On what kinds of questions are those invalid existential conclusions relevant?
Like, A-->B some C
And we can't conclude A some C.
Are these in must be false questions? Has anyone come across a question that deals with this kind of ...
For PT46 passage 2, only a picture of the video is displayed. I tried several times to refresh the page, and still couldn't view the video. Can you please help me to solve this problem? Thanks in advance.