Did or did not Avi speculate that this object could be an alien probe on a reconnaissance mission?
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He gave it a 4 rating based on the known observations and the raw data & science behind those observations.
We speculate knowing little of the science and have only text to judge the observations, and none of the raw data which Avi uses. So one could say his are informed speculations, while ours are just wild guesses. There is a huge difference between the 2.
I haven't made any guesses—wild or otherwise—about this "comet." Have you?