Answer:
Mary and Jamal received the message through different channels.
Explanation:
Based on the information provided within the question it is safe to say that the most likely cause for the differences in the message is that Mary and Jamal received the message through different channels. This can be said because Mary seems to have received the message in a text format or audio format since she seems to only mention the presidents literal word meanings. While Jamal most likely received the message as a video since he is basing the presidents meaning on his physical reaction during the speech.
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