How refreshing to read this unusually polite exchange on theory/theories instead of the regular rubbish (e.g. free advertising scams, UKvUSA, anyone going to XXX?, questions which should be addressed to the FTO, do I have a better chance of employment if I go to ABC?, disgruntled dreamers, genuine nutters and tiresome tossers).
BTW, My problem is not how they work (or look) but just cannot comprehend why anyone rational would risk helicopters.
