Ooh, I'm proud of myself. I watched this lecture earlier in the week because I knew my time later in the week would be pretty limited and so I'd started the problem set too. I couldn't understand the second one, though. I was going to ask here and see if someone could help me out, and in phrasing the question, worked out what I'd misunderstood before. :)

elz, you may need to create the poll in another (public) entry. I think polls can only be created at entry posting time, not at edit time.