paranoia and excessive parenthesising is not such a bad thing after all..
Where can you put parens in the statement in question to make it be interpreted as addition printing to the currently selected filehandle? Others here have shown how a plus signs helps, but I haven't seen how parens would.
What actually avoids this affect from hurting you is having a sane whitespace style — something which has many benefits.
Excessive parenthesising is, by definition, excessive. Mostly in makes code harder to read for those of us who know (or can guess) the precedence rules — because you have to put effort in matching up the parens and satisfying yourself that they are indeed superfluous; they look so similar to necessary parens that they can't be quickly dismissed.