[mental4astro (Alexander)]

I have reviewed my arguments in my posts below. It is easy to misinterpret people's meaning and intentions some times, and then react in a way which with hindsight is inappropriate. My ego is not so stubborn that I cannot own up to this.

From my side of things, as materials change with fashion and technology, we need to embrace this chsnge. Otherwise we would still be driving Model-T's. It also means we cannot be so pigheaded to recognize when materials are no longer available. The older materials and designs we owe a lot to. They still work. Very bloody well. I guess a compromise would be to find allternatives that will allow theold and new to both grow with the new materials that are replacing the old as these will eventually disappear, but we will still want to build our scopes.

I guess I am also saying we need to understand why the old materials worked, what is currently available that when adapted will do the job, and have an open mind to the alternatives and be prepared to use and acknowledge these.

Alex.