Others are useful or profitable in offering passengers opportunities and helping them make better use of their waiting time.
Respectable economic theory holds that government spending, properly directed, lifts the private sector and makes it more useful and profitable.
I even thought that some monopolies were useful; securely profitable newspapers obviously behaved more responsibly than economic weaklings.
Three years ago this farm was about to be broken up and sold on because 117 acres was considered too small to be useful or profitable.
I say "mystery" because so many of us love games, and devote considerable time and energy to them, though they generally result in nothing concrete, useful or profitable.
In addition, the power authority agreed to pay for most of the costs of decommissioning the plants when Entergy officials conclude that they have reached the end of their useful, or profitable, life.
But despite the analogies to the wired Internet, it is likely to be much harder to create services for wireless devices that are easy, useful and profitable than it has been for the wired world.
Under the deal, the Power Authority, a quasi-independent agency, would pay for most of the costs of decommissioning the plants when Entergy officials felt they had reached the end of their useful, or profitable life, Power Authority officials said.
We are, in other words, deep in TED territory here, where no innovation can ever be merely useful or profitable, and must always mark something like a turning point in human history.
From being a villain – the man who supplied arms to the IRA, the man responsible for the Lockerbie disaster, one of whose agents had killed the police officer Yvonne Fletcher in London's St James Square in 1984 – Gaddafi immediately became a useful, and profitable, friend.
