DEAR MISS MANNERS: On our neighborhood app, one of my neighbors cautioned that two young men had recently knocked on her door. She could see them on the security camera and she did not know them. She thought them odd, but opened the door anyway.

Nothing bad happened, but she felt unsettled and brought the interaction to our community’s attention.

I commented that it was fine to ignore knocking and to not open your door to strangers, adding that it is not even impolite. Another neighbor disagreed and said it was impolite. Please settle the question.

GENTLE READER: Safety -- and legality -- transcend etiquette’s social obligations. You do not need to be welcoming to someone who is robbing your house.

The fact that your neighbor was unsettled is enough evidence to affirm that she should

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