"Where would you put... Civilization coming up with some weird reason to suddenly shut down all the satellites and shortwave radios, but ultimately a reason explicable inside all of the standard physics we know and motivated by understandable reasons and not involving any aliens?"

"Let's call that one non-mundane.  I'm not picking a definition of 'non-mundane' that's never been realized a la 'since the beginning, not one unusual thing has ever happened'.  Like, whoever first discovered radioactivity was dealing with something pretty non-mundane by their standards, if they wondered why purifying glowing rocks was making people sick."

"Also Civilization should've maybe sent a message telling us to shut up too, on most theories like that."

"Heavily implied but I check: whatever called for screening history would qualify as non-mundane by your standards, even though we're told that it's not about anything that violated physics nor was non-mundane in an ultimate sense."

"If anything with that level of drama is going on, nonmundanity will have been said to win."

"Secret hidden Negative Utilitarian faction is attacking, and destroyed the satellites and emergency transmitters as their opening move."

"Sure, I'll call that non-mundane.  Mostly because I don't think they can actually do that, by the way."

"Not betting my life savings, but I'll go my 10 $ULH against your 10,000 $ULH on something non-mundane having happened."

"....nnnoo.  I think at those betting odds and something very weird having just happened to us, I want to exclude the Negative Utilitarians shutting down satellites and emergency equipment as not being ultimately nonmundane."

"My 10 $ULH against your 1,000 $ULH, but the Negative Utilitarians still count as a win for me."

"Obviously I ought to check if there's odds about that in a general onboard prediction market--"

"Where's the fun in both of us going off and looking at the standard market odds before we bet?  Where's your sense of adventure, Keltham?  Of nonconformity?  I'd read you as more strongly male-gendertroped than that."

It's been ten minutes.

"Captain to crew.  Do we have anything interesting in the on-board prediction markets?"  The crew probably would've bipped in a nonurgent notification, if there was anything running high or that just seemed obviously correct.

She was kind of hoping that someone on board would have some clue about what was going on, would confess to having some kind of mad-experimental anti-radio equipment buried in their checked luggage... not exactly that, of course, but something.

As one starts, so does one often continue; Blue is staying on cockpit management.

"Seventy percent all other possibilities, is the bad news."

"Thirty percent something understandable is better than I expected."

"Yes, well, twenty-five of that is on a supercriminal having sabotaged all of this plane's comms equipment simultaneously."

"Wouldn't have expected that to get to twenty-five."  As the proverb goes in aviation and most other industries, it's never supercriminals.

"There's really not a lot of good explanations being floated besides criminal masterminds, is the thing, here.  Like, even the 'all other explanations' aren't that good.  Two of the remaining five is on sabotage of all land comms."

"I got myself a piece of 1000-to-1 about our plane not being in dath ilan anymore."

"I foresee settlement issues."

"Honor system."

"But what do you honorably do--nevermind.  Do we have any tests?  If it's cheap I'd do anything someone wants to pay a hundred for, at this point."

"No cheap active tests.  The market is holding some of its breath on you breaking out the backup shortwave equipment in 5 minutes, and wants to know the flight crew's independent estimate of a probability distribution of when we ought to see an escort flight of aircraft showing up.  If, you know, we're still in dath ilan, and Exception Handling is not incredibly busy."

"And then the market wants to know when we're predicted to see land, or any other clear landmark, if we are where we think we are and no escort flight shows up."

"Please don't tell me we've got half the passengers planning out an isekai-handling strategy Just In Case."

"All right, I won't tell you."

"Captain, if criminal sabotage is running at twenty-five we should not be trusting the Inertial Positioning System."

"Aw radioactive shit.  Blue, tell the market we're subsidizing an estimate on whether the Inertial Positioning System has also been sabotaged, and does anyone have a weird-personal-toy with independent IPS... and somebody has to have a compass... no we're buying all the compasses anybody has, in case a criminal planted one that's sabotaged... and see if anyone's got ideas about checking for a planted piece of onboard equipment that could drag a compass off-course."