For the following, try to come up with an additional premise that will turn the passage into
a deductively valid or an inductively strong argument. Usually this requires adding a
general moral principle and, sometimes, an extra nonmoral claim as well. The idea is to
guarantee that the “ought” claim follows from the “is” claim.
Karen and Gina were roommates for about five months, and, as far as Gina knew, they had
planned to room together until the end of the school year. But when Gina returned from a
weekend at her parents’, Karen had moved out. Since she couldn’t find a new roommate
on such short notice, Gina asked Karen to pay half of the next month’s rent, but Karen
answered that she didn’t owe the rent since she wasn’t living there anymore. I think Karen
should pay at least half of one month’s rent, since Gina was led to believe Karen was
going to be living there and paying half.
When one person acts to produce reasonable expectations on the part of another, the first
should compensate the second for failure to meet those expectations when it leaves the
second at a disadvantage.
For the following, try to come up with an additional premise that will turn the passage into
a deductively valid or an inductively strong argument. Usually this requires adding a
general moral principle and, sometimes, an extra nonmoral claim as well. The idea is to
guarantee that the “ought” claim follows from the “is” claim.
Harold is obligated to supply ten cords of firewood to the lodge by the beginning of
October, since he signed a contract guaranteeing delivery of the wood by that date.
People should abide by the terms of contracts they agree to.