robin at robinw.org.uk
Wed Mar 22 06:10:25 UTC 2017
A few more thoughts on Extension
At least Roddy has cleared up what might be called the 'Chinese
memories' w.r.t. Beverley. Just as a matter of interest, do you still
have a note of the extensions with which you came up?
It was interesting to note that someone one remarked about some methods
not having extensions. Not all people are parents, of course, so why
should any given method be a parent of extensions but, on an historical
note, those who set up the original scheme were surprised in the other
way - that so many methods did have extensions. I do not understand why
anyone would have a problem of a method with no extensions all though I
have heard it said, in jest, I hope, that no new method should be
allowed unless it is indefinitely extendible.
When we discussed indefinite extension years ago, some people believed
it was possible to prove this quality. Now the same are rolling back
from this. My view is that, since ringing takes place on small numbers -
no peal has been rung on more than 22 last time I looked - an extension
of a method going to 10 and terminating must be of more practical use
than an extension starting at 28 and increasing by 24 each time - there
are some! After all, not all parents become grandparents!
Tidying up on a few comments. PRK - the point about the 5-6 places in
Cambridge S8 is that it is not 'new' work, just some old work repeated
in a different place. Truly 'new' work would be something like Stedman
whole turns introduced from nowhere - like that odd point in
London#3S10. He is not the first not to believe in the concept of
Extension and he won't be the last.
Alan Reading can be quite re-assured that, in the original work on
Extension more than 60 years ago, Superlative at all its stages - #1, #2
and Maximus did not comply with the formulae. The problem was that they
had been rung before formal work on Extension was begun. (As was Plain
Bob & Grandsire). It was also pointed out then that any formula would
come up with 'sub-standard extensions'. As MBD is saying, you can't
account for Human nature!
By the way, there are, of course, a set of sequences based on
Lincolnshire S8, including Swindon S10.
There really is nothing new under the sun!
More information about the ringing-theory