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In the future, you might get paid to judge how moving and emotional music sounds. Or how good food tastes.Those examples sound pretty tractable for statistics, +/- better measurement technology in the case of food. Emotion isn't magic, there are whole industries that already know how to design things to be "moving and emotional".
> As long as there exist services that humans want and we can't yet automate, there will always be an economy.
The issue isn't "an economy", but an economy where most population can find gainful employment during their entire working age. This is increasingly becoming less likely in the future, and we need to find a way to deal with that.
(Also, the prices are flexible, but if they shift too high or too low, producers start doing problematic things or give up on the product entirely. This is how you end up with farmers letting tons of perfectly good food to rot, while 10 minutes down the road there's a city full of starving people.)