I have been using 7sage for months and this is a new problem. I found a discussion thread about this from 3 years ago but nothing more current. Please help.
... valid conclusions on contrapositives. The videos from Invalid Argument Forms are ... wrong. Can anyone suggest the videos or any other methods to ...
Is there any way to see and navigate through the full course concept tree that JY uses in the videos? I think it would help me connect the dots a little bit as to how some concepts relate to each other and help me figure out what to study again.