What should they regard as too obscene, since they held that all morality was a mere subjective by-product of the physical and economic situations of men?

It's a mere by-product of NullGrav - that's why they classified it.

It seems to me immensely unlikely that mind is a mere by-product of matter.

They exist to sell gas, motel rooms, and combination plates, and the atmosphere is a mere by-product.

It's a mere by-product of broadcasts.

These agreements must be applied to the letter; however, the promotion of the right to democracy cannot be a mere by-product of policies on cooperation, international trade or humanitarian aid.

Likewise, innovation and creativity are not mere by-products of the competitive market, and that is why we need the resources to offer them public support.

As things are, it comes as a mere by-product of something that's bigger and even more stupendous by far.

It's a mere by-product of NullGrav-that's why they classified it.

But that is a mere by-product.