Re: Seems smart
With sporting events, solo sports (the closest equivalent to The Voice) will be relatively easy compared to team sports. Each additional player introduces so many more variables. In one sense, though, most sports are easier to calculate because there's an established ordinal definition of winning. In artistic performances, so many of the measures are subjective.
At some point, the system for predicting the winner of the Voice could become so fine-tuned that it could predict the winner from the first perfomance. A sufficiently advanced neural net, given enough data, should be able to do it. Perhaps in the near future, one of the judges would be a computer interface. (I'm imagining a kind of Kirk-Spock-McCoy face off, with the human McCoy snarling at the Spock interface that music is about human emotions, not algorithms.)
Studio executives would probably be delighted to have a system that could be applied to audition tapes, YouTube, and so on.