A lot of people have floated theories about what may have happened to Malaysia Airlines' missing jetliner. Terrorism. A fire. A remote landing. Even Courtney Love thought that she may have spotted its wreckage in the ocean.

But with the search largely at a standstill over the past few days, there isn't necessarily much more reasonable ground to cover. That may be why CNN chose to turn to more unreasonable ground yesterday, when it began posing theories that it received from Twitter to former US Transportation Department inspector general Mary Schiavo. "What if it was something fully that we don't really understand?" anchor Don Lemon asked, throwing out black holes, the Bermuda Triangle, The Twilight Zone, and "the movie Lost" as examples. "I know it's preposterous," Lemon says, "But is it preposterous, do you think, Mary?"

"But is it preposterous?"

Fortunately, we do have a good understanding of black holes and pop culture. "Well, it is," Schiavo says. She dismisses black holes and says that events chalked up to the Bermuda Triangle are often a matter of weather. She also points out that Lost is a TV show. "I always like things for which there's data, history — crunch the numbers," she says. The segment was spotted and captured by Talking Points Memo.

For now, the actual search for Malaysia Airlines Flight 370 has turned to the Indian Ocean, where Australian officials report that satellite imagery has shown two potential pieces of wreckage, according to The Wall Street Journal. A diverted commercial ship is reportedly now on site searching for debris, but it is yet to find anything.