The Reapers work for a Post-Singularity society.The future people are retrieving people at the moment of death via the Reapers. The whole "soul removing" bit is Brain Uploading to their internal storage. The manifestations we see of these minds are simply avatars projected into the minds of the Reapers. The "un-versions" of the Reapers are holograms designed to prevent them from being recognized. The "lights" are a manifestation of the person being transferred to the future. The Reapers aren't told (or paid) because the future people have a very strong temporal prime directive.
The Reapers' bosses have a sick sense of humor.Examples 1.01 to 1.93: Everything about the Gravelings (an explosion during a bank robbery and an attempted hit, and the only person to die just got his paycheck and slipped on a banana peel, the stacking on their day off seems to be a result of an ingrained compulsion to make unlikely things happen). Example 2: The girl's Lights in The Pilot (George tries to use the "you have to go home from the carnival at the end of the day despite wanting to ride the roller coaster forever" analogy from the pilot and the Lights are in the form of a carnival).
The last person Rube reaped before Ascending To A Higher Plane Of Existence, who became a new reaper as a result, was Kiffany.We know that the last person who's soul a reaper takes becomes a reaper themselves. Assuming that George's experience as a new reaper is typical, new reapers get taken into the group that the former reaper was a part of. Whoever Rube reaped wasn't. The rule about reapers staying away from people they knew in life would explain that, but only if it was someone who knew the group in life.
They became a Reaper.You know that character that you loved? The one who died? The one who didn't return/ascend/become undead? That's because they became a Reaper. The reason why they didn't return to tell their friends and family to move on or anything, is because you can't, obviously.
Oscar the cat is a Reaper.Just think about it. Knows about deaths in advance? Check. Touches the soon-to-be-dead? Check. Oscar is clearly working for the Terminal Diseases Division. There is a human who reaps pets, so why couldn't there be a pet who reaps humans? Besides, being a cat seems to be a great camouflage. There's only one question left to answer: Should I be afraid of Gravelings now?
The group is misinformed (by the assumptions of Rube or their predecessors, most likely) that everyone needs to be physically reaped.Only the people who land on the cross-seams of the pattern need to be reaped. When someone who needs to be reaped isn't, the pattern starts to fall apart until the first person is reaped and the pattern can reassert itself or put an hem around the hole. Some groups happen to have a higher rate of local, categorical deaths reaped than others, and other groups may only reap a couple of people out of every hundred in their category. It all depends on the local lines and flaws in the pattern (it's even possible that the more times an attempt at reaping aversion has happened in the area, the higher the rate of reaping necessary, as the universe can't take care of things outside of its original pattern and the reapers need to reap anyone in the current pattern that the original pattern didn't cover, as exemplified in the episode where all of the victims of the faulty exercise band were reaped after George failed to let its producer die).
George is favored by the Gravelings because they chose her to command them.Gravelings are souls that have "gone bad"; we see this with Ray. Even Reapers can't normally see them except in the corners of their eyes, but George has been able to see them since childhood. The movie ends with her promotion to head of her cell of Reapers. Dealing with the problems of her new position will give her the training in bullshit-wrangling she needs to eventually be put in charge of commanding the Gravelings. Being that Gravelings are obnoxious turds most of the time, of course they would choose a Deadpan Snarker of epic proportions to one day be their boss.
The real reason Trip never called George back is not because he's scum, but because he discovered that "George Lass" was dead.With how crazy and suspicious Trip's sister was, she probably did a background check on the name "George Lass" and discovered that she had died in a freak aerospace accident. She would have of course informed her brother, causing him to believe that the girl he'd just slept with was some shady person using a dead girl's name. This would've freaked him out enough to never want to contact her again.
the tree guy in episode 3 season 1 asended to the realm of platonic formsjust look at all the weird symbols
Mason is a Time Lord.Two reasons for this one:
Rube gave Mason a purple post-it to mess with him.He's been shown to have more than enough yellow post-it notes in his apartment, and I'm sure Rube does little things every so often to mess with his team of reapers so he doesn't get bored.
Cameron was a test to determine the next managerCameron puts them all in situations where they'd be tempted to not follow the rules. He simply distracts Mason and Daisy, because both are screw ups and will mess up on their own when they realize they can do what they want. This leaves the more likely candidates — George and Roxy. Roxy never got credit for leg warmers, and always felt the need to move up (such as into the police academy). So Cameron put her in a position where she could save lives by not taking her reaps. George on the other hand has always struggled with reaping people because it makes her feel guilty. So he puts her in a situation where she'll have to reap someone that her sister loves. George is the only one who passes, and it's why the post-it notes fall from the sky on top of her. She's been chosen to be the next manager (further evidenced by her reaction)