Voice recognitition is far, far too unreliable to use it.
Phazer
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Myth.
There is an awful lot of data on these things already, but there is absolutely no evidence that Apple is even providing data back to Neuance at all, never mind that any improvement in voice recognition would result.
Siri's voice recognition is basically done. The beta period is about server reliability and some of the messes in it's processing (for example, in the UK Siri quotes share prices back in pounds rather than pence, getting them wrong by two orders of magnitude).
Phazer