The grandparent seems correct and I don’t see why “Um, no” is supposed to follow from the parent.
It might be easier to see if you think of the case when you know only one other TDTist and he would vote for the other guy. However, you’re not sure how many other TDTists he knows.
It might be easier to see if you think of the case when you know only one other TDTist and he would vote for the other guy. However, you’re not sure how many other TDTists he knows.