Here are some readings pertaining to the discussion.

Today we are doing class offline. Here are some slides, and a link to a video.

What to do if you want to adopt a proform approach, but this is not compatible with your syntactic assumptions?!

A basic intuition is that we infer the meaning of what wasn’t said on the basis of what was.

Ellipsis is one of a very few constructions in natural language that is non-resource sensitive.