Thanks. We’ve only been at it for 20 minutes and this is ending friendships in my group chat.
A better debate would be wheels vs hinges.
Because I wouldn’t call a window a small door for example.
Every time I’ve seen this come up, it turns into a kind of coastline problem. The closer you look at everything we’ve built you just start finding more and more doors and just as you think it must be the winner you start seeing all the wheels that go along with them (or vice versa).
It’s impossible to know which one wins without very clear (and limiting) definitions of “door” and “wheel”. Those definitions would have to be equally restrictive to both “doors” and “wheels” or else the limitations decide, not the world we’ve built around us. I posit that anyone claiming to have an answer have made up their own limits of what “counts” and those limitations are likely not equally balanced.
Every door that is opened by a hinge has AT LEAST one wheel associated with it 🤷
Wheels win 😈
I don’t think that is accurate, the majority of door hinges I am aware of have what I would call an axle, but no wheel.
There are doors and hatches that have no hinges. They lift out.
Im going to chime in here and say we expand the definition of wheels to include doors and the definition of doors to include wheels.
Problem solved.

In the future, all doors are wheels.

People are getting way to technical about it
Human made doors vs human made wheels
Balls don’t count as wheels
I would say you need an actual door so the doorway between your living room and hallway doesn’t count. That’s a doorway, not a door
The issue is, what counts as a wheel?
My car engine has some round shit that spins for belts on it, are those wheels? I would say, for fun, no. It has to be a wheel… used for moving the object around, gears and shit don’t count
I still think wheels win because there are lots of toy cars in the world
A gear is called a tandwiel in dutch. Which translates to teeth wheel.
So those are wheels and they are everywhere.
Look, I’m not about to let Dutch tell me what’s a wheel and what isn’t. 😉
Would a car trunk lid count as a door? My guess would be no. Same with the hood.
What about on a van? My kids get in and out of the back door of our van, but when all the seats are up it’s essentially just a big trunk lid.
Then consider kitchen cabinets. There’s no other word for cabinet doors - they are necessarily doors. Is a trunk lid different from a car door in any ways that a cabinet isn’t different from a house’s front door?
Toy cars, scooters, bicycles, motorcycles 2:0 real cars are probably a little over 1:1
I think you nailed it
I dunno, I think a lot of those “round shit that spins” are defined as wheels. A pully consists of a wheel and something stretched over it and pulled. A gear is literally a “toothed wheel”. I could see an argument that a typical ball bearing consists of 2 wheels, an inner and outer.
Still though. Doors are everywhere. Cabinets, ovens, microwaves, fridges/freezers, washers and dryers, closets, etc. The trunk and hood of a car, the glove box, center console, the little storage compartments tucked away all over modern SUVs, hell there’s a door hiding the mirror on my driver’s and passenger’s sun shade in my car.
I think I could literally have this conversation back and forth all day. lol
I think SciShow did a thing like this for Eyes vs Legs.
It comes down to definition, but if one, but not the other, definition include biological parts then that one wins.
If no biological being has “wheels” but say, a valve, is considered a “door,” then doors will always win.
But again, it comes down to definition.
A valve is not considered a door.
That’s exactly what I mean. What is, and isn’t, a door? What is, and isn’t, a wheel?
Are treads a type of wheel? Are sliding doors, doors? What about a sliding window on a slightly smaller frame? Are rotating doors are doors, but not open doors? Are bearings and rotors wheels? Are gears wheels? Is a log a wheel, and if not, then if you replace a car’s tires with similarly shaped and sized logs then are those wheels?
Is a valve a door? What about a very large, flat shaped valve that looks like a door? Is a swinging door a door or a wooden valve?
Why not? If the valve has a hinge and closes off a pathway when shut, i don’t see why it shouldn’t be considered a door.
A switch is a type of door for the pixies… and every car has a whole number of those, so doors win
Define both. Does a doorway with no door but instead beads or a curtain count? Is a tiny door a door? A cosmetic one? Are spinning and potter’s wheels wheels? Casters on furniture?
I think each string of beads counts as its own door. Hear me out. If you had a double door, you’d count it as two doors, right?
If you were living in a cave and you used an object to block the entrance, that’d be a door, right?
Ergo many objects that together serve as a door just by being in the way each count as separate doors.
But if you had an accordion door you’d only count that as one, so that’s why it’s each string of beads and not each bead.
Are the component parts of a hinge on a door a wheel?
I say wheels: trucks, trains, planes, chairs, skateboards, roller skates, toy cars, small cabinets with wheels, bikes, motorcycles, scooters, wheelbarrows etc have more wheels than doors.
But think of all of the buildings that have no wheels and tens or hundreds of doors. And what about cabinets, they unequivocally have doors and only occasionally have wheels
They often have wheels on furniture
I had this thought too, then I realized the office chair I’m sitting in has 5 wheels, and the cabinet with my printer has 4, but my office only has 1 door. Then there is my secret bookcase door, but it has 2 wheels. Counting everything door and wheel in my house comes out pretty even. But doors would win if you count cabinets as doors.
There are many biological things you could easily consider a door, but there are no biological wheels.
Also planes have doors to enclose their wheels. When not in use as well as doors for the passengers and pilots to enter the plane. I think on average there are more airplane doors than airplane wheels.
Yeah planes probably have an balance between wheels and doors.
I can see the biological angle I think that’s a bit stupid, if we consider transistors doors then doors win by a giant margin. So I considered the simple definition, like a car door or house doors and same with wheels
Other than most planes have multiple wheels per gear. And especially so the heavier it gets.
For planes, I’m on the wheels side
That’s a hot take, considering there is a door above every row of seats on a plane for passengers carry-ons, not to mention all the doors for all the stuff the flight attendants have stowed away that has to be able to be closed off. There are SO MANY doors on a commercial plane.
Are those really doors though?
And if so the rollers on the back to help them pivot are wheels…
I don’t know enough about how airline storage door hinges are built to know if I can agree with them having wheels, but most hinges I do know of don’t contain wheels.
Hinges are not wheels
There absolutely are biological wheels. The ATP synthase molecule has an axle and rotor that spins, and you have ~1 quintillion in your body.
If this counts as a door then it’s a game-changer: https://csbphd.mit.edu/news/door-mitochondrial-membrane/
But if this is a wheel it’s not even a question anymore: https://en.wikipedia.org/wiki/Flagellum#Motor
Somebody found the secret door to the power house of the cell!
Neither of those count.
If we’re going off of wheel-like structures than we can include Cogs. If we are then it’s 100% Wheels.
Do we only count wheels on vehicles? Or do toys count? What about my toddler’s cozy coupe? Wikipedia says that pulleys are a type of wheel, too.
I’m not gonna do any real math or anything but I would guess that just the vehicles and toys would push wheels far above doors.
But if we include wheel-like, we have to include door-like, such as flaps. Would we include, say, drain plugs? Taps? Gates - both fences and electrical? Drawers?
Think about how many claps and doors are inside of your body. There are no biological wheels.
flaps if they’re considered a point of entry, then yes. Drain plugs are plugs not a point of entry, so they don’t count. Gates and fences are considered doors, taps, idk what those are probably not. Drawers are not a point of entry, so no, they don’t count.
Ideally: Door-like should be considered object meant to function as a point of entry that are not limited by the direction of movement BUT is not limited to inanimate objects like toys and crafts BUT must be functional, can not be a drawing
Turnstyles, revolving doors, Lamborghini doors, elevator doors, single direction sliding doors, flaps (given that pets use them), bidrectional swing doors, single direction swing doors, saloon doors, doors with the sliding cover windows like that are on doors that you need a secret knock for, screened doors. Suicide doors (- cars)/french doors (- buildings), airlocks on a space station, any and all doors on vehicles. any and all doors on toys assembled ideally but if you make a Lego door it counts and if you make a doll house door it counts. Any door you make with arts and crafts supplies.
By that logic, windows should be included in the door category (‘wheels’ will probably still win though)
Why would windows be counted as doors? I would grant that any solid portal that can be opened and closed to allow access is a door, such as cupboards, junction boxes, and some windows. But many windows are not able to be opened or closed. I wouldn’t think those could count, because that’s the essential function of a door.
What about biological doors? What about valves? Are gates doors? Are manhole covers doors?
Easily wheels. Every roller bearing in things like drawer slides, sliding closet doors, sliding shower doors, sliding screen or glass doors, etc. are technically a kind of wheel. A single door could have multiple wheels. Garage door segments with multiple wheels as rollers pre segment. Cars, bicycles, scooters, skateboards, motorbikes all have multiple wheels. Wheels aren’t just for locomotion. 18 wheel trucks have only two doors but obviously 18 wheels, not including any hand-trolleys it might have in the back for loading/unloading. Trains have multiple bogies usually with 4 wheels each and two to a car, 8 wheels per car and maybe two to four doors.
But wait, what about an office building full of hundreds of doors? Think of every office chair with multiple wheels. Desk drawers. Office carts. Elevator pulleys, doors, and guides.
Wheels win.
Way more wheels than doors.
I see your wheel argument but want to add cabinet/closet doors to muddy the waters. My non-representative bathroom has 6 doors and no wheels. Then there are developing countries that often don’t have wheels on their drawers and doors and rely on hinges more.
But they can have cars, motorcycles, mopeds, bicycles, hand carts, carts pulled by animals, and more. Does a doorway need to have a door on it to be a door? I kinda figured it sorta does, and probably in developing countries they might have curtain covers for cabinet doors rather than solid hinged ones. Not sure though.
It really depends on the country I’ve been to latin America and most people there have doors on their cabinets from what I’ve seen. Wood and labor there come pretty cheap. We’d need to get a good idea of an average house in India and China to make an educated guess.
One thing I’m pretty sure about is that there are more wheels being created now than doors.
You have me considering team door
All creatures have an anus, and an anus is technically a door. Think how many insects there must be.
If a sphincter is a type of door, the body has many of those. Not to mention other biological doors. Doors absolutely win this imho
Can’t beat that technicality, we’re surrounded by assholes.
an anus is technically a door
Interesting take.
it’s really give and take
"Previous research conducted by various teams confidently concluded that the abudance of wheels present on Earth greatly outnumber the frequency of doors. However, our lab, through novel research conducted by NigelFrobisher, presents the Insect Anus Theorem. In this paper we will explore why insect anuses… "
I come here for these answers
Maybe not anuses, but I can see valves being considered doors. And animals have tons of valves
Appliances have doors. Some.even have multiple, like fridges, dishwashers and tumble driers.
But yeah, I’m still on team wheel
Tumble driers have wheels to rotate the drum on. Some dishwasher racks have plastic wheels for sliding the racks out.
This has broken my brain.
I have 40+ wheels I can think of in my house. Chairs, carts, bikes, shit there’s even one on my mouse. That’s not even counting all the wheels in my massive Lego collection.
But then again… Cabinet doors, microwave, refrigerator, oven… Fuck!
What have you done to me?
Depends on how you count wheels.
A bicycle has two wheels right?
Well, what about the bearings? Those are basically little wheels, should we count those? Now hold up a sec, inside the bearing, there are either balls, or rollers, which actual like little wheels for the bearing to turn on… so maybe a bike has like… Over 40 wheels on it.
Personally, I think I’m going to go with wheels over doors. I can think of a lot of doors that have wheels in them, but I can’t think of that many wheels that have doors in them.
A wheel needs an axle, so the bearings aren’t a separate wheel, but part of the larger wheel. You can have multiple wheels on the same axle, but not on the same plane. It gets more complicated when wheels are attached to eachother like on a truck.
In the same vain, I think doors need atleast a frame and a large sheet of some kind to close it.
Wheels definitely still win by a large amount though, think of all the factories with machines with dozens of wheels in them
A wheel needs an axle, so the bearings aren’t a separate wheel, but part of the larger wheel.
So if you take the wheels off the bicycle, are we no longer counting them as wheels?
Also, bearings have inner and outer races, so technically, the inner race could be considered an axel.
In the same vain, I think doors need atleast a frame and a large sheet of some kind to close it.
I think this definition of “door” is probably too restricted at the same time. When I moved into my house, I had to take some doors off to get the furniture in. The doors are still in the basement. My wife sometimes asks me what we are going to do with the doors in the basement. If someone was down there, they would recognize them as doors that have been removed. By your definition, those doors aren’t doors. As the same time, the lid on a dumpster meets the definition of a door, so maybe the definition you have is too expansive?
The point is, the question is confusing because wheels are doors are concepts that we have, and not strictly defined objects.
Well yeah I think a perfect definition that fits every situation doesn’t exist.
I think if the described item doesn’t fulfil its role at the current moment, it doesn’t count. Otherwise any round object with a hole in the center can be a wheel or any flat sheet could be a door
Upvoting for importance in this debate: You can’t count a wheel twice if it has wheels nested inside of it
Fake doors? Real doors? Real fake doors?
Fake wheels? Real wheels? Real fake wheels?
Wheels, just because of Lego
Today, almost 50% of all Lego sets contain wheels.
And this is without getting into non-vehicle wheels like flywheels, gearwheels, etc
Lots of Lego sets have doors too. I think wheels still probably win, but it’s closer than you think.
And electric eels.
No, sorry, I think I got myself confused.
Real talk here: is there a class of mathematical problem where trivial set sizes lead to provable (and sometimes intuitive) conclusions, but real world data sets become uncountably large, thereby being unsolvable? I want to say all this resembles NP-hard in that way (e.g. picking small teams for basketball is easy, huge is not), but we’re not doing any real math here.
At the same time, No True Scotsman is in play since how the fuck do you agree on a definition of “a wheel” or “a door?” Hell, technically speaking: both have axles and can rotate!
Wheels are round. Planets are round. Therefore, all planets are wheels. And we do not have the parking space for that.












