All right, suppose that all of us liked exactly the same objects exactly the same amount. This obliterates the poorly-written-textbook’s reason for “trade”.
This is nonsensical, because whether an individual person likes something is not a constant. If everyone liked oranges just as much as apples,, trade would still be possible because the 1st orange is preferable to the 99th apple and the 1st apple is preferable to the 99th orange.
This is nonsensical, because whether an individual person likes something is not a constant. If everyone liked oranges just as much as apples,, trade would still be possible because the 1st orange is preferable to the 99th apple and the 1st apple is preferable to the 99th orange.