Kirk Mahoney . com

I saw this in a course for sales agents.

Problem:
The word “back” is redundant in this expression.

Explanation:
The expression was part of advice in a company’s course for its sales agents:

(Quote) “Once you have determined which of the 4 Ps applies, mirror back (or paraphrase) to the customer what you think the objection is to be sure you are on the right track.” (unquote)

The word “mirror” means reflect when used as a verb, and the “re” in “reflect” means back.

So one could argue that a “mirror back” action would never reach the intended recipient.

Solution:
“… mirror to the customer …”