Either man could practically be mistaken for the other.

Perhaps the old man had been mistaken; or perhaps not.

By lunchtime the two searchers were pretty certain the man had been mistaken.

Langdon knew the young man must be mistaken.

And a man can't be mistaken about what he knows.

It appeared the dead men had been mistaken for terrorists.

If not for his expensive suit, the man might have been mistaken for an Irish cop.

It may be argued that some men, in the heat of the moment, may genuinely be mistaken.

But might not the man have been mistaken?

I thought that the new men were mistaken.