Eric Schmidt, executive chairman of Google parent company Alphabet, has made a thinly-veiled attack on Apple Music in a BBC op-ed on artificial intelligence. He described human-curated music selections as a decade out of data and an elitist approach.

A decade ago, to launch a digital music service, you probably would have enlisted a handful of elite tastemakers to pick the hottest new music.

Today, you're much better off building a smart system that can learn from the real world - what actual listeners are most likely to like next - and help you predict who and where the next Adele might be ... 

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