It's theoretically possible that you might again one day be right when I am wrong.
It has never been done before, but it's theoretically possible.
It is theoretically possible for a game to go through with only two players dealing at different times!
Indeed, I only recently learned that it was theoretically possible.
I have showed that it is theoretically possible, but no more.
Some things seem like they might be theoretically possible, but we've never had any way to test them.
So we do know that it's theoretically possible for something bad to get onto our computers.
We all know that is theoretically possible, if most unlikely.
An exchange is theoretically possible, but no one has ever done it.
Experts say it is theoretically possible, but they know of no such cases.