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The pathway through the forest to Silver Lake has been closed for the past two weeks due to heavy flooding. The only way to reach Silver Lake now is by navigating a narrow and rocky stream, which is only suitable for strong swimmers.

Maria: "I saw my neighbour Patrick taking a swim in Silver Lake about three weeks ago. He must be a strong swimmer."

Theo: "My friend Layla planned to visit Silver Lake last week. Since its flooded, she must have cancelled her visit.

If the information in the box is true, whose reasoning is correct?