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> So hang on, would this mean that, as a host app or module writer, I can no longer rely on this to work:
>   t = { 1,2,3 }
>   print(t[2])
>   -> 2
> if some other module or user script has gone and installed a ???clever??? type metatable?

The problems of having *one* event handler for all values of each type
led us to move from fallbacks to metatables. See section 6.8 of our HOPL