Congressional testimony this week about reverse engineering from crashed UFOs and the recovery of non-human "biologics" sounds like science fiction.

And that's the realm in which it will remain unless scientific and other hard evidence enters the picture, says Northeastern University assistant physics professor Jonathan Blazek.

He says he finds it "very frustrating" that former intelligence officer David Grusch "back(ed) away from specifics" in his July 26 testimony before a House Oversight subcommittee on .

"I think what I find most surprising is that lawmakers seem to be taking him so seriously at this point. I'm sure they know things that I don't," Blazek says.

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