The Sunday-morning news talk show chatter is full of speculation about one of the major-party candidates for president of the United States.

Will the Republican, Donald J. Trump, look “presidential” when he faces Democrat Hillary Rodham Clinton in their first joint appearance Monday night?

Looking “presidential,” I feel compelled to add, does not erase the record of profoundly non-presidential moments in the campaign to date.

The endless list of insults does not vanish simply because the deliverer of those insults looks presidential.

The hideous mocking of a disabled reporter? The bizarre back-and-forth with Marco Rubio that centered on the candidates’ manhood during a Republican primary debate? Trump’s awful response to a journalist’s question about how he treats women? His stream-of-consciousness policy changes on immigration?

Whether the GOP nominee “looks presidential” during this highly anticipated event with the Democratic nominee will not wipe away the lengthy demonstrations to the contrary.