Yes, absolutely! It&#x27;s the tenet No 1 of a market – when people freely exchange something, both are better off. (No 2: there&#x27;s some stuff that you can&#x27;t do without cooperation).<p>But in the potato-case, all the potato-value and great-fence-you-have-there-value gets added to GDP, where realistically, output only grew by whatever the increase of efficiency was.