To whom do you offer your shells for sale? To people who come from Saint Michel (where shells abound).

Understand the thought

Meaning in plain English

An offer is unlikely to impress people who already know its subject and have ready access to what is being offered. Consider the audience’s knowledge before presenting something as rare or valuable.

What the words are saying

The question exposes a mismatch between the seller’s pitch and the people being addressed. The collection’s parenthesis presents Saint Michel as a place where shells abound; the interpretation does not require an independent claim about that place’s history. The important point is that these customers are familiar with the item. Good communication starts by finding out what the audience already has and what would actually help them. It need not become a contest to outwit a knowledgeable person, and familiarity does not make every possible offer useless.

Everyday example

A supplier pitches a standard template as a unique discovery to a team that already uses it. A more useful conversation begins by asking which parts of their existing process still cause difficulty.

When to use it

Use it when an offer ignores the recipient’s existing knowledge or resources.

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Agent-assisted editorial interpretation. This explains the words; it does not by itself verify their author or earliest origin.