Sherlock Holmesian deduction led the master detective to the right answer in the face of the seemingly impossible many a time.
How often have I said to you that when you have eliminated the impossible, whatever remains, however improbable, must be the truth?
When you present a mystery to a group of player characters, you coud be forgiven for thinking they might go through the same process. But it doesn't quite work that way.
Many times they will utterly ignore or overlook the improbable, the possible, and even the likely explanations, and focus straight on the completely impossible with pinpoint accuracy. In fact, if you want to identify things that are genuinely impossible, there is no better tool than the obsessive investigation of a group of RPG heroes.
Commentary by Keybounce (who has not seen the movie)
[Keybounce's comments will appear here when received.]
Commentary by memnarch (who has not seen the movie)
Kanata must really want those death sticks. The first thing I would have said as him would have been something like "Sounds like you got a fake map then, chumps", and probably gotten a few threats in return. If Kanata has been expecting someone to try and track him down for info about Ahch-To though, the "Unless" comment would make much more sense.
Oooh! Maybe Kanata was another one of Luke's companions on that expedition and he knows that Lor San was the only one with a map. Being a cursed map, Lor couldn't/wouldn't have handed the map off without being doomed. As Lor isn't here, that means he's dead. Of course, this all makes too much complicated sense, even when removing the idea of a curse in Star Wars, so there's probably no overlap with the actual movie dialogue. Maybe Han is attempting to recruit Kanata for some reason?
Hmmm, this table doesn't seem that private or secluded an area to talk. Most of the party is facing away from the room as well. And poor BB-8; too short to see the top of the table. At least he's next to Darth Kanata to be able to talk face to face without it becoming too awkward. I wonder if BB-8 has a periscope or can lift his head up to see higher.
GM: Back in the bar, Darth Kanata has led you to a table where you can talk.
Darth Kanata: All right. What do you want for the death sticks?
Yanni: We heard you know the Galaxy better than anyone.
Darth Kanata: You heard right. Seen systems, walked planets, met aliens.
Finn: We have a map showing a route to a system, but it doesn’t match any nav charts.
Darth Kanata: Well that’s just not possible.
BB-8: That’s what I said.
Darth Kanata: Unless...
Rey: Unless what?
Darth Kanata: No. It can’t be.
Finn: If it can’t be, why would you say “Unless”?
Darth Kanata: Ever heard of drama, son?