It is a problem that has defeated generations

It is a problem that has defeated generations of philosophers, poets and painters, but one Japanese company thinks it has come up with a way of knowing for sure if people are happy.

(Hitachi High Technologies, a subsidiary of conglomerate Hitachi, says its new happiness-measuring device will let bosses know if they run a happy office or if their employees are secretly bored at work.)

Japan Today

HINTS
a problem that has defeated generations of philosophers

one Japanese company has come up with a way of knowing if people are happy.

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