Imagine there is an agreement that does two things: a) eliminates some tariffs and b) murders all children under the age of 12.<p>If (a) is good and (b) is not related to or necessary for (a) then clearly we should do (a) and not (b), and an agreement that ties them together for no reason is flawed and should be voted down so we can come back and vote on the separate issues separately.<p>If (b) <i>is</i> related to and necessary for (a) then clearly (a) isn&#x27;t worth (b) and we should vote down the whole agreement.<p>Notice that in both cases we should vote down the whole agreement.