sadness (and of other terms for mental states) is at a minimum, there is an important sense in which it is conceivable for "sadness" to be different in India. At the very least we might discover that in one culture people experience "fatigue and heartaches," but not when valued things become unattainable, whereas in another culture people withdraw from the world when valued objects are irrevocably lost but this withdrawing has been coupled or harnessed in ontogenetic development to a very different somatic experience. If all our universals are known, by strict definition, in advance, thinking will be the only way to travel, and, alas, the armchair will be the only route to salvation. I think a weak version of PL is more fun, although not quite as much fun as dining with Jan Smedslund.