Answer:
The new geologist has more rock samples than Bill Gates has dollars.
What is Allusion?
An allusion is a figure of speech in which an item or incident from another context is mentioned subtly or indirectly. The audience is left to make the straight link.
When the author states the relationship clearly and unambiguously, it is referred to be a reference.
When we make an allusion, we want the other person to understand what we're referring to. The reference comes in the statement, "The new geologist has more core samples than Bill Gates has cash." It's a reference to Bill Gates. It employs him to draw a parallel.
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