What if there could be a friend making/ dating app that matches people based on the number of common subreddits that users are active in? More the number of shared subreddits, greater the common interests - and possibly, likelihood of a good connection?

How come a flexible hydraulic hammer doesn't exist? It seems so simple that either my understanding of physics is wrong or something else like not enough practical use.

Concept: two hammerhead pistons connected by a water tube. Cover the tube in a flexible steel or aluminum casing that has some resistance so it can maintain its shape. The pistons are set on guiderails and a set of springs to reset the position. Hammering one end will cause the same impact force on the other end. This would allow you to hammer around obstacles, in tight spaces, or just change the hammer angle.

I don't care if someone steals this idea. Curiosity is more important to me.

What the F do I get my husband for Valentine’s Day lol. We have never really celebrated it because we were raising 6 kids. Now we are empty nesters and trying to do “all of the things” with/for each-other. He is kind of an anti-social homebody. Doesn’t really have any hobbies. Isn’t a gamer. Likes to smoke 🌱 and watch old movies, comedy movies, spoof movies. Never asks for anything. In 25 years I can think of MAYBE a handful of things he has ever said he wanted. Anyone else like this out there??? What would you want your significant other to get you? We don’t want to spend a ton of $ since we are in the process of building a house. We just want to have a fun day and celebrate since we never really have. If it wasn’t winter I would set up a movie night in the backyard with a giant blow up pool and pillows and put blow up screen but…….. Any advice??? Please and thank you!

Hey r/ideas! I was thinking about how annoying it can be to take out the trash when you live upstairs in a double-story home. What if there was a mini trash chute you could attach to an upstairs window? It could extend down to your trash or recycling bins outside, making disposal super easy.

The chute could be compact, removable, and maybe even foldable for when it’s not in use. It sounds convenient, but I’m wondering:

• Would this actually work in real life?
• Could it be hygienic and weatherproof?
• Has anyone seen something like this already?

Let me know your thoughts or improvements! 😊

Of course, the four choices presented to each player would be in random order and hidden from the other player.

Note that if the AI is weak, this could result in a more balanced game between weaker and stronger human players.

Do you think this chess variant would be compelling?

Hi! my best friends 21st birthday is coming up super soon, and i’m so stumped on some last minute gifts to get her, what are some solid gifts for newly 21 year old women👀

Hi everyone,

I’ve been working on an idea for an AI-powered microlearning app, and I’d love your honest feedback (and any roasts if necessary). The concept revolves around using Retrieval-Augmented Generation (RAG) to deliver concise, accurate snippets on various topics. Users could either explore random topics to expand their general knowledge or request specific subjects they want to learn about.

Here’s what the app would offer:

1. Topic Summaries: Bite-sized explanations generated by AI, perfect for quick learning.
2. Flashcards: Automatically generated for key terms and concepts.
3. Quizzes: Interactive exercises to test understanding and retention.
4. Customization: Users could choose the level of detail they want or request content in different formats, like timelines, ELI5-style explanations, or deeper dives into subtopics.
5. Gamification: A points-based system for completing quizzes or mastering flashcards to keep things engaging.

The idea is to create a flexible, engaging tool for people who want to learn during short breaks or on the go. Think of it as combining the best features of ChatGPT, Anki, and Duolingo into a single app.

However, I’m unsure about a few things:

• Does this idea stand out? There are already apps for flashcards, quizzes, and learning in general. Is this unique enough to capture interest?
• Will people use it consistently? Or would it just end up as another app they forget about?
• Potential pitfalls? Could AI accuracy, content relevance, or lack of user engagement be dealbreakers?

I’m also open to suggestions for features that might make this more appealing. Is there anything similar that you’ve used and loved—or hated?

Unlike most shows, the goal is to have the audience vote them off — thus freeing them.

To achieve this, contestants must create or say something creative enough to convince the audience to set them free.

The contestants could leave before being voted out, but they would not earn the prize money.

Do you think this would make an interesting show and produce interesting inventions?

So you know how AirPods have noise cancelling and transparency mode, why don’t they add a language translator. The translator would work with both AirPods in and it would use the noise cancelling feature to block out the original speaking and translate it in real time so you can have a full conversation with someone that speaks another language and still understand it in your known language. Let me know if you think this is smart.

Hey guys I've thought of, what I think would be a really good theme park type idea. It would be called big small world. It would be more of a walk through experience rather than rides etc.

You would start by walking through the lobby and into a 'shrinking machine' which would be a cool looking room which makes noises and shakes and stuff. The guide would explain that this room will make you shrink in size. You will now leave through a different door - (but you don't realise it) back into the lobby - but the lobby is now huge, but exactly the same otherwise - giving the illusion that you're actually tiny now. - there will even be little details like a huge paper clip, or rubbish on the ground etc to make it extra real.. from here you could go back into another machine which would make you huge - and this would walk out into a tiny lobby... There would also be other rooms which you could experience being big or small in.. for example a kids bedroom, and when you are 'tiny' all the toys on the ground would be huge etc..

I think it would be super fun for the kiddos

The imaging technologies used for both overlap.

Hear me out, similar to how you can scroll on TikTok or Reels, you can scroll on this platform to find new books with an algorithm to determine what books you may like. Also, there can be a comment section to comment on certain parts of the book, with the page number of the book, which will be hidden for spoilers if you haven’t gotten there yet.

Hi Redditors,

The GMAT (Graduate Management Admission Test) is a standardized test for MBA programs, focusing on problem-solving, critical reasoning, and data analysis. Success requires not just knowledge but also managing stress and time under rigorous conditions.

The Challenge
High-quality GMAT questions are limited (mostly from official sources), which makes strategic practice essential. However, excelling also requires rigorous preparation to master the test’s demands, beyond just solving official questions.

The Solution
I’m building an app powered by AI (Large Language Models) to generate realistic, GMAT-like questions. It’s designed to provide:

• Unlimited Practice: Unique, high-quality questions that mimic GMAT standards.

• Skill Development: Build stamina, time management, and problem-solving skills.

• Adaptive Tests: Personalized practice that identifies and improves weak areas.

Your Feedback Matters!

1. Would you use such an app? What features would you value most?
2. Any suggestions for improving AI-generated questions?

A prototype is ready—errors may appear, but it’s a start! If validated, I’ll refine it further with deep evaluations.

https://www.prepzeal.com/ (No Signups, No cookies)

If you’re curious or preparing for the GMAT, I’d love your insights! 💡

Would this help address the issue of students using AI to cheat?

These rooms would contain computers designated solely for completing and submitting homework.

Library staff would supervise them to ensure students do not use personal devices to cheat.

Homework would only be accepted by schools if it was completed and submitted online from one of these public library rooms.

So, normally there’s like not much to look at when you’re running or walking a 10K. So, my idea is that one would scale down the distances of the solar system so that 68 Astronomical Units is equal to 10 kilometers, so that all the Planets and Dwarf Planets — except Sedna and hypothetical Planet 9 — would fit within the distance of a 10K, with Eris being almost at the 10K line.

The scale is set up such that:

1AU= 10 km/68 ≈0.1471km(or 147.1 meters)

Earth would be placed at 147.1 meters, where the first water break would be

Neptune would be at 4.4154 km

Eris would be all the way at 9.9707 km

After the 10K portion, if one opted in for the ultramarathon portion, they would continue on until they reach the 88.3 km mark, where Planet 9 would be placed

To make it more interesting, other objects would be added like spacecraft, asteroids, minor dwarf planets, scattered disk objects, quasi moons, etc.

For example, from one camera angle, it might be obvious that a punch or kick didn't land, but from another angle, it might not.

Perhaps AI could do a better job than a human at selecting camera angles in real-time to conceal the misses in professional wrestling moves.

So I’m writing a superhero novel,not a comic book,a real book.So this story so far is about this girl who one day is walking home from school when she is suddenly caught in the fight of a team of Earth’s greatest heroes.They’re like the Avengers or the Justice League of this universe.The girl comes across this one superhero who is essentially the Superman of my universe who is dying,but he says he wants his legacy of hope and Justice to live on so he transfers his powers to the girl before he dies.So she receives his powers and uses it to become a superhero.

The only thing I’m having trouble is finding out how to make the transfer happen.Like for his powers to transfer to the girl.

If anyone has any ideas please let me know🙏

The game makes questions about the proprieties of the language, like phonology, structure, grammar, and so on. The book would be able to create multiple colangs that are similar, but have unique proprieties that diferentiate from one another.

It would be a cool way to teach people how to create their own language, and could be used as reference for Tabletop RPGs with cultures and races that have different languages, or fantastic histories, and more.

What if there was a cooking show about pregnancy cravings?

You know how cooking shows are all the same? It's always amateur cooks competing to make a meal a famous chef likes. What if we switch the roles?

What if we have pro chefs cook for pregnant women with weird cravings. Pregnancy cravings are weird and specific so what if we had chefs try to make them gourmet and satisfy a pregnant women.

Wouldn't it be interesting to see gordon Ramsey make a pickled, sprinkled sandwich with whipped cream on top look gourmet?

I've recently seen a lot of cool animatronics/attractions that are just tucked away in urban environments, like the Murray Bridge Bunyip or the Watermouth Castle Crocodile. These are all pretty cool and neat, so imagine if cities had more. It'd be fun and boost tourism. Like imagine how cool it'd be to walk around some kind of building and seeing a little booth with an animatronic/puppet in it that you can press a button to activate or something. Maybe even make it coin-fed for the big money.

Racing lovers, I was diving into my 3am Thought's and an idea came to me.

Imagine, in the past at the Nürburgring, more specifically at the Nordshleife circuit, cars have already taken off, and I thought of a system that, even adding weight and perhaps being too expensive, could prevent this from happening...

I thought of a system similar to one that space companies use, the RCS, this system consists of a mini gas thruster that would prevent the car from "Flying".

It would work like this, the moment the pilot saw that the car was going to take flight, he would press a button on the steering wheel that would activate the gas thrusters that would push the car down and together with the friction force, the car would return to normal, it would probably crash anyway, but it wouldn't be that serious, right?

It would reduce the severity of an accident that could be fatal, to an accident that would send the driver to the hospital and the car back to the factory with the front completely destroyed.

In your opinion, is this extra cost worth it?

Ever had the urge to text your friends in the middle of the night but don’t want to wake them up? There should be a different texting mode where notifications make zero noise or vibrations and can only be seen by someone currently staring at their phone. The implementation might be a simple line of code, or it might be a whole rework of an already working texting app. I’m not a pro, but this idea would be very helpful if it worked as planned.

The idea is - if you travel without an item that requires overhead bin space, you can to board and deboard first.

Most of the time boarding and deboarding is people loading and unloading the overhead space, which often has to be done synchronously and sequentially - especially while deboarding. Additionally, the large baggage item usually requires walking the aisle slowly as you maneuver the bag. If you just have your personal item you can just go directly to your seat and sit down.

This would encourage people to either check baggage (more $$ for the airline) or travel lighter (better fuel consumption / environmental impact). This would also increase the availability of overhead space. Also provides a non-trivial bonus to people who travel light anyway.

Hear me out! It is a dating app for serious people but who are not able to find the ONE.

Every person has some SMV (datiing market value). Now, every time I swipe right, I pay a fee depending on my SMV and the SMV of the person I am swiping right. If I am swiping someone right who is way out of my league I will have to pay more and there's no guarantee other party would be ready to pay to get matched with me. I obviously wouldn't want to right-swipe someone way below my own SMV because everyone wants the best they can get for themselves. Hence, this app will encourage people to date in their SMV group, leading to higher chances of marriage. And payment will be adjusted such that when you are swiping right in your own SMV group you don't have to pay a lot.

Why pay per swipe?: it shows that you actually want to swipe right and are serious about it.

What do you all think? If someone wants to build this out, I have no problem in getting the idea stolen.

So I have a tower PC, and my front panel buttons to turn off the computer for Shutting Down and Restarting are right on top. Well, my Kitty likes to go up there and lay there and She ends up laying on top of the buttons and it turns off my computer sometimes delaying or stunting progress I got going on there.

I need help coming up with some innovative ideas to work around this by finding something that I can put around the buttons. I wish I had money for a 3D printer and knew how to do that stuff. Does anyone have any ideas?

Also: I am aware Windows 11 has a setting that allows you to control what the power buttons do, unfortunately this does not apply to the restart button or holding down the power button for a long time to Hard Shutdown the PC. So I am still in the same boat.

Matches would not be scripted, and wrestling moves, while similar to those already used, would be done in a way to inflict maximum pain/damage.

Androids would simulate getting tired and feeling pain during the match, so one android winning doesn't mean the other has been seriously damaged.

Would this real professional wrestling by androids be more compelling to watch than what is on offer today?

Would you enlist someone to come into your business, home, or garage and list all of the potential items you want to get rid of(junk) and only take a cut of each item when it’s sold? This is only a variable expense to the seller with no upfront costs.

My take is that even if you sell for a fraction of what you paid, that will outweigh the burden of having a closet or garage full of stuff that you barely ever use.

Polling and comments appreciated.

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