So, is my appeal to return to the subject matter of the thread falling on stony ground? Do you feel, like BOAC, unable to get anything more out of a technical discussion?
It's amazing what a little bit of knowledge and a whole lot of arrogance can produce.
Just like my younger sibling: "Bow to my expertise or I will kill the discussion." Hopefully, you'll grow out of this mentality one day.
If anyone actually wants to discuss, as opposed to sneer, computers and aviation I will still check this thread from time to time.