[r-t] Poll on consecutive blows in the same position

[Alexander Holroyd]

>> Can someone explain to me what a lead-based method is, and how it differs from a non-lead-based method?
>
> Something generated by a finite sequence of place notation? Plus some other junk if desired to make it be a “method"?
>
> dale

Well in that case, surely everything that is rung is a lead-based method, 
isn't it?  (I don't recall any reports of infinite-length peals).  The 
reason for my question is that I don't see any need for such a 
distinction, but perhaps I am missing something.