But. The inviter asked me to speak on grammar and punctuation.
For doctoral students?
Seriously, what exactly would I cover? And why couldn't doctoral students figure out for themselves, or with the help of their advisors, what their problems are and how to solve them?
And what about the DECADES of research on grammar instruction in isolation, indicating that grammar instruction -- if taught separately from students' actual writing -- has no impact, or even a negative impact on student writing?
If I were a doctoral student taking that course, I would not be happy that my time was being wasted in this way.
I'm sure that there are doctoral students who need some help with their writing, in terms of their use of standard English, but this is not the way to go about helping them.
I declined the opportunity.