In some cases, it's more a concern of economically _viable_. Sometimes, the fact that something would cost more means it's not possible. We have teachers that have to pay for the children's school supplies out of their own pockets, because the school system doesn't get enough money.
In some cases, it's more a concern of economically _viable_. Sometimes, the fact that something would cost more means it's not possible. We have teachers that have to pay for the children's school supplies out of their own pockets, because the school system doesn't get enough money.