Two forms of the same French game, you muppet; Lawn tennis developed from Real Tennis, as you well know; which means the ORIGINS of Lawn Tennis are French. Many other sports develop alternate forms, but share an origin; Rugby Union and Rugby League, for example. Now answer the question you are trying desperately to avoid; by your definitions, and taking the universally held view that sports are part of cultures, cultural separation of the kind you advocate means the inevitable end of international sporting competion, since only the country of origin could take part in a given sport. All other countries would be excluded, as said sport would not be part of their 'own good culture'. Is this what you are proposing? Or do you believe that it's ok for some things to be global? If so, you are arguing against yourself. Your principle of cultural separation has only ever been argued in absolute terms, and expressed aas a recommendation for the world to follow.

So, what's it to be, WAV; stick to your principle of cultural separation, and thus argue for the end of international sport, or drop the idea and admit that you hadn't really thought this through?
Tim

PS; properly maintained cogs don't make a clanking sound.