Was Carl Segan an Agnostic Prophet?

I ask that those who want to participate follow these rules:

Syllogistic representations are preferred.

Anecdotes are welcome, but please limit yourself.

Platitudes are self recriminatory.

Haiku are considered poetry.

Math, while appropriate, may cause confusion.

If the argument that you represent is not listed above please try to limit your response for clarity.

Those who wish to argue that “Agnostic” and “Prophet” are incongruent, please understand that “Prophet” is understood to mean “any person that can observe phenomena over time and hazards a guess to what will happen next”.