I’m a planetary scientist so technically this is a field, you can also be into meteorites as a hobby.

Chondrule formation. These are spherical balls of formerly molten rock that solidified and clumped together to form chondrites, some of the oldest rocks in the Solar System that predate planet formation. Essentially these are nebular dust grains that formed when the Solar System was still an accretionary disk.

Except, do chondrules predate planet formation? What causes them to melt while they’re floating around? How do they overcome the kinetic barriers to agglomeration? Are the terrestrial planets, whose bulk composition is thought to be chondritic, actually composed of chondrites?

If you want to see one of the most simultaneously esoteric and bitter scientific debates, attend a chondrule formation session at a meteorite or planetary science conference. MetSoc is a great one in August, and officially I go to present my work but actually I just love the fireworks. As an achondrite person, I don’t touch this topic with a ten foot pole, but I love to watch when someone introduces a new wacky idea (space lightning? Shine from a molten Io? Extrasolar?) and you see 15 eminent greybeards rush the mic to yell their objections.

-Guitar picks/strings

-Warhammer editions (Or competitive vs narrative play)

-using linux and the many reasons why

Some would argue it misses the topic, but I’ll offer the Unix text editor wars. Vi vs. Emacs is pretty much the epitome of a pointless religious war in people’s favourite activity, though for some that’s obviously their job.

Why do I mention it? Because most would just look at it and say: obviously none of the above, what are you even talking about? But those in the know have been heatedly debating the topic since at least the 80s… (I’m team vi for what it’s worth)

D&D vs PF2 really brings out the uhh, loudest of each community

There’s this guy on https://2004.lostcity.rs/ who is always buying and selling items for >15% the trade values, and the forums have hundreds of posts complaining that he should be banned from using the markets. Which is impressive, considering the entire community is like 200 people

I’ve gotten quite into doing pub karaoke for the past three years. It started as me going to monthly nights at my local, then following that particular KJ after they cancelled future gigs with her, to befriending and following a few other hosts.

There’s three particular debates:

• Who produces the best karaoke backing tracks? There are a lot of websites/platforms that produce licensed karaoke tracks, such as Karaoke Version, Sing To The World, Sunfly, Karafun, Mr Entertainer, Zoom Karaoke and a few others. I think some can be more hit-or-miss than others. Karafun are generally good with lyric readability but their app/service is kinda shit if you don’t have an internet connection.

• Should the host get on the mic and sing at all? Some i know are the kind who like the sound of their own voice a bit too much and tend to hog the mic, but there’s also one I know who rarely if ever sings himself.

• As a host, should you play songs between singers. I can understand spacing out singers when it’s quiet, but if it’s busy and you have a few dozen singers waiting for their turn, you’re just gonna piss people off if you play full songs between each act in my opinion.

Here’s another one: Is there a “blind community?” This may sound odd since the very fact the question exists implies there is, since blind people have to get together and discuss it. So in some ways yes of course there is, but I’m inclined to say no, at least not in the sense that a lot of people define “community”.

Blindness does not respect class, creed, or culture, so you have blind people from all over the map ideologically speaking who all approach their blindness in different ways. That’s not getting into the difference between low- vs no-vision, or born blind vs blinded later in life, or blind people who are independent vs those that lack access to proper training. I’ve run into blind people who don’t like hanging out with other blind people IRL because the spectrum ranges from “can’t even pick yourself up when you trip without help” to “flies around the country alone with no problem.”

I think the question exists because we look at deaf people who unambiguously have cultures and languages unique to them when we don’t really have that.

Female Space Marines. I’m gonna leave before this thread explodes.

In the world of Game Collecting, the guy with potentially the largest single collection on the planet is getting rid of his collection.

The ideal plan was for it to all go to a singular museum, which was in the works and then unfortunately fell through. Problem is the next two backups also fell through. So plan D involves the collection being split up and some of it going to the Embrace Group, and some into private collections, which was seemingly both never the plan. People who donated items, thinking that they would eventually be publicly displayed, are rightfully upset. And then the rest of his fans, such as myself, are somewhat bewildered that this is how it will end after decades of amassing a collection, and then years of saying it’ll all be going to a museum.

Doctor Who has a bunch of them!

One of the big recent ones was the Timeless Child plotline. For people unfamiliar with the show, the basic premise is that the main character, the Doctor, is an alien who’s species can regenerate themselves when they’re about to die which saves them but they become a physically different person. This was invented back in the 60s so they could change out the lead actor, William Hartnell, when he got too old to continue in the role and it’s become a core part of the show. We’re now on about the 15-16th Doctor, although that number is a bit contentious too for reasons I won’t go into here because that’s a whole other thing.

A few years back there was a plotline where it was revealed that the Doctor isn’t just a regular alien, they’re something called the Timeless Child that just appeared in our universe from somewhere unknown, and was the one that gave their whole species the ability to regenerate themselves. This was widely hated, as it not only changed the Doctor from a sort of wandering hobo into a Super Special Chosen One, but it also directly showed that William Hartnell wasn’t the first Doctor, there had been probably dozens of other ones before him that had just never been mentioned until now.

The internal debates that I’ve seen usually aren’t people debating whether this was a good idea or not, they’re mostly about the best way to retcon it away and never speak of it again lol.

systemd is fine for some

Supernatural. Whether or not Destiel was canon.

It’s been 15 years I don’t really wanna talk about it anymore lol

The Grateful Dead were not a jam band , jam bands wanted to be the Grateful Dead.

And also, the mk4 platform we’re the last real VW’s ever made and anybody that thinks differently is a civilian that needs to shut the fuck up

In the Deltarune fandom, there’s a fairly heated debate on whether the character Ralsei (depicted as a feminine male in game) will end up coming out as transgender or not

Both sides feel it’s the most natural route for the story, both sides have evidence in their favour and both sides feel the other would ruin the story

A recent merch ad depicted a female Ralsei and it caused a bit of revival in the discussion (despite ads not being canon)

BMX: free coaster vs cassette.