I don't know why Richard Hoagland thinks Phobos is artificial - there doesn't seem to be anything to back up his claim.
I have looked at plenty of surface images of Phobos and I have never seen anything that would allow me to be so sure of artificiality as Dick is.
And him saying, "look at all the stunning rectilinear features" just doesn't do it for me. As soon as one gets in close, those "blatant indicators of artificiality" turn out to be terrain features and naturally formed grooves and streaks. All the bearded persuasion in the world couldn't turn that rock into an alien spaceship.
*Of all the images I've seen of Phobos during my long hours of endless, rewardless, soul-sucking, mind-melting research, this thing right here is the closest I've come to seeing of anything artificial on the surface (apart from that curious monolith), but even still this looks natural:
Edit: Dana, you are most welcome. And you are right, Hoagland was downright rude to that man; it was a sorry display.
Did you see how he tried to force his way into the Mars Society Conference by putting Zubrin on the spot. Then Snoory goes and further encourages him in his ungentlemenly behaviour by also pressuring Zubrin.
Hoagland just went down another peg as far as I'm concerned.
P.S. & FWI : If you listen to the show starting in the third hour, that is when Hoagland and Zubrin start talking. The parts I posrted are from the first half of the final hour.