Rejecting the urging of his physician father to study medicine, Hawking chose instead to concentrate on mathematics and physics.

You can always ask a question in return.

Let's play cards instead.

Instead, he worked a switch that controlled his computer.

In such a case, you can always ask a question in return.

But in return they get a clear look at important games, and if they miss something, they can always rely on the commentator's description or the instant replay.