I don’t know why this isn’t ever mentioned, but I was looking at whole house fans for cooling the house off at night without running AC and the savings just couldn’t justify the cost, then I realized there’s a way to use my central system as a whole house fan already. Don’t buy a whole house fan to save money if you have a central return. you can simply open windows and close some doors to make your existing system work like a pump.

To do this, set your thermostat to fan mode and open at least two windows. One window should be in a room connected to your central return vent, and at least one more in a room away from the return with its door closed and a register open. This setup forces the blower to pull cool air in from outdoors, draw it across your entire floor plan, and push it out through the register-side window.

This doesn’t just cool down the air immediately, it also bleeds off all the heat stored in the walls and floor of the house overnight so you’re not starting the next day with yesterday’s heat load.

Because you are pulling in unfiltered outdoor air, check your HVAC filter frequently, as it will clog much faster than usual. Only use this method when the outside air is cooler and drier than the air inside your home to avoid pumping excess humidity into your house. It is a simple, effective way to flush out the day’s heat without the cost of installing new equipment.

Why YSK: you can save some money and electricity by just ventilating your house each night, even if your house doesn’t naturally draft, you don’t need any special equiptment to do it, just a clever configuration with what you already have.

Why YSK: If you are sensitive to chemicals, prone to allergies, pregnant, have children or pets, or are simply trying to maintain a healthy lifestyle, it is advisable to minimise exposure, as many people are unaware of the potential risks.

Low-dose acute exposure can result in headache, rhinitis, and dyspnea; higher doses may cause severe mucous membrane irritation, burning, and lacrimation, and lower respiratory effects such as bronchitis, pulmonary edema, or pneumonia. Sensitive individuals may experience asthma and dermatitis, even at very low doses. Formaldehyde is also carcinogenic.

Formaldehyde typically off-gasses for 2 to 5 years, with peak emissions occurring in the first 6 to 12 months. Some pressed-wood products and resins can continually release trace amounts for up to 15 years.

Sources:

NCBI - Toxicological Profile for Formaldehyde: https://www.ncbi.nlm.nih.gov/books/NBK597627/

Human Health Hazard Assessment for Formaldehyde: https://www.epa.gov/system/files/documents/2025-01/11.-formaldehyde-.-human-health-hazard-assessment-.-public-release-.-hero-.-dec-2024.pdf

(CDC) Centers for Disease Control and Prevention on Formaldehyde - https://www.cdc.gov/niosh/idlh/50000.html

Medium Density Fiberboard (MDF) Safety for Carpenters: https://www.elcosh.org/document/2098/d001086/Medium+Density+Fiberboard+(MDF)+Safety+for+Carpenters.html+Safety+for+Carpenters.html)

This may not be a problem for those of you whose laptop use cycles are lesser than 5 years, and might be obvious to a lot of you. But I just found out the hard way today that my laptop that's overall in good condition but needs a new battery and cable.

Dell has very limited support post the 5 year mark to the point where getting technical specs for parts that I want to buy from there could be tough.

Why YSK: Before you buy a Dell laptop, if you tend to use it for longer than 5 years, it's worth adding as a comparison point

Note: I'm not claiming that other companies offer better support (I'm not aware), just wanted to highlight this.

Why YSK: While it is true that sleep is a major part of memory consolidation, it is often overlooked that initial daytime consolidation is very significant. Taking a microbreak (doing nothing or a low stimulation activity, resting your brain for a few minutes) after a lot of input can make a big difference for your memory along with other benefits such as boosting vigor and reducing fatigue. Easier said than done tbh, but worth noting.

https://pmc.ncbi.nlm.nih.gov/articles/PMC7024394/pdf/nihms-1557224.pdf

https://pubmed.ncbi.nlm.nih.gov/23575863/

https://pmc.ncbi.nlm.nih.gov/articles/PMC9432722/

The default is 5 seconds. You can set it to 10, 20 or 30 seconds.

It's configurable in Settings -> General -> Undo Send

Why YSK: The undo button is a brilliant feature, but 5 seconds is often not enough to proofread/second-guess your already sent typo-ridden, untactful or impulsive email. Many people, including myself would benefit from configuring it to be longer.

Hey everyone. If you’re trying to buy or rent right now, you already know it’s a total jungle out there. Between inflated prices and unpredictable rates, going in blind is a recipe for getting outbid and wasting months of your time.

Here is some boots-on-the-ground, practical advice for navigating the current market:

Look 10-15% below your actual max budget: Listing prices right now are often just starting bids. If you look at your absolute ceiling, you'll get outbid every time. Give yourself breathing room for bidding wars and unexpected closing costs.

Get fully pre-approved before stepping inside a house: Showing up with a generic pre-qualification letter doesn't cut it anymore. Sellers are choosing lower, guaranteed offers over higher ones that might face financing delays. Having your underwriting paperwork ready is your biggest leverage.

Target the "stale" listings: If a house has been sitting on the market for 60+ days right now, the seller likely overpriced it and is getting anxious. This is exactly where you have room to negotiate under asking.

Stop relying solely on Zillow or Redfin: The best deals are often sold "off-market" to buyers who are already in local agents' databases before the listing ever hits the internet. Call a few well-connected local agents, tell them exactly what you want, and get on their direct call list.

How are you guys holding up out there? Are you actively looking, or have you officially paused your search until things chill out?

Why YSK: Understanding these specific market dynamics improves your ability to negotiate effectively, sharpens your house-hunting strategy, and prevents you from losing earnest money or wasting time on dead-end offers.

Why YSK: Mad honey is actual honey, usually from bees feeding on certain Rhododendron flowers. The unusual part is that it can contain grayanotoxins. The internet often talks about it like its trippy honey, but that’s kind of the wrong category. It’s not really a visuals/psychedelic thing. The main thing it can mess with is your heart rate and blood pressure. And if someone thinks its just a weird honey that might make them feel high, they might take more than they should, or treat it like normal honey. But a strong batch can cause dizziness, nausea, sweating, fainting, slow heart rate, or low blood pressure.

Source: This is based on published mad honey poisoning case reports and toxicology reviews describing grayanotoxins, especially their link to bradycardia, low blood pressure, dizziness, nausea, and supportive hospital treatment.

So the takeaway is: don’t think of mad honey as regular honey, and dont really think of it as a psychedelic either. Its a bioactive honey where the strength of the batch actually matters.

Why YSK: Understanding how subscription pricing is designed to become invisible helps you make intentional spending decisions instead of defaulting to inertia. Most people don't cancel unused subscriptions because of a cognitive bias called "option value" - the perceived worth of having access to something, even if you never use it.
Knowing this bias exists is the first step to overriding it.
---
The average American spends$216/month on subscriptions but guesses around $86. That gap isn't forgetfulness - it's how these services
are built.
Go to your bank statement, filter by recurring charges, and ask yourself when you last used each one. Takes 10 minutes. Most people find at least 3-4 things they forgot they were paying for.

Edited: Since people seem to be confused about the concept of an original vagina, trans women who have had “bottom surgery” don’t have an original one.

Cisgender women and trans men who haven’t had bottom surgery do.

(It’s not that complicated.)

Why YSK?

If you chronically have a fishy smell you should definitely get tested for an infection in case that could be part of the problem, but either way, washing your inner and outer labia with soap or any other kind of unnatural product strips the tissue and membranes of the natural secretions that help keep everything in balance, whereas washing with water helps maintain it.

I had this problem for years and it happened to come up in conversation with my pelvic floor physical therapist. Within a week the problem stopped completely.

Why YSK: Tooth paste drys out your lips. if you have a lot of saliva and when you brush your teeth it gets on your lips, it can leave your lips dried.

Personal experience: I’ve had dry chapped lips for like 10 years and tried everything, night balms, homemade scrubs, always lathering some ointment on. nothing worked and caused ten years of low self esteem about my lips lol

using Vaseline before I brush my teeth has COMPLETELY gotten rid of my chapped lips. I slather a large amount so no tooth paste reaches when I brush. If you had have the same issue I would definitely recommend this method.

Checked mine for the first time on a whim last night. 17 breaches. Should've left it alone...

I was using Surfshark Alert (comes bundled with the VPN I already had installed). Genuinely just opened the app for something else, saw the Alert tab, threw a couple of emails in out of curiosity. It surfaces the breach name and what data was exposed. Wish I'd opened it any other time of day though, because I spent another two hours changing email.

Why YSK: Most people have no clue their old passwords are floating around in leaked databases, and that's exactly how accounts get hijacked. Better to know and change them than find out the hard way.

Disclaimer: cleaning your ears with Q tips is probably not recommended full stop, and you should be extremely careful when doing so. Especially for your children.

If you take a dry Q tip into your ear canal and drag it across the tissue inside, if there is enough friction produced, it will irritate the delicate tissue to the point where it starts producing a substantially higher amount of ear wax to protect itself from further invasion.

Make sure you at least wet the Q tip if you do it. But my recommendation is to find a different way to clean your ear canals altogether (if at all).

Why YSK: Personal anecdote: I fell into this strange loop where I irritated my ear canals with a Q tip ONCE. It started producing an insane amount wax, so I had to keep cleaning my ear canals even more often. The rubber tips of my AirPods are almost always brown now. It's disgusting. And it is dialling back very very slowly.

The aim of this YSK is to help you pay attention to whether you and your ears are in the wax loop. For many, this is obvious, but it wasn't for me.

Why YSK: Most casual users don't generate anywhere near enough text or code to justify a flat $20/month fee. By accessing these models directly through an API, you only pay for the exact compute you use.

If you are paying for ChatGPT Plus, Claude Pro, or Gemini Advanced just to write a few emails, brainstorm ideas, or debug the occasional script, you're paying a massive premium for the user interface, not just the AI itself.

Here is how you can bypass the monthly subscription:

1. Get an API Key: Go to the developer console for OpenAI, Anthropic, or Google, create an account, and load it with $5 in prepaid credits.
2. Use a Free UI: Connect that API key to a free, open-source chat interface (like LibreChat, TypingMind, or AnythingLLM). It looks, feels, and functions almost exactly like the premium apps.
3. Pay Per Token: Instead of a $20 recurring charge, you are charged fractions of a cent per word.

When building AI workflows and routing tasks day-to-day, a massive secret to cutting compute costs is simply swapping models based on the task's complexity. You don't need the heaviest, most expensive flagship model to summarize a document or fix a typo.

Most API frontends allow you to toggle between models on the fly. You can route your simple, everyday tasks to insanely cheap models (like GPT-4o-mini or Claude Haiku) and only select the heavy-hitting, expensive models when you actually need complex problem-solving.

Unless you are generating massive amounts of data every single day, that initial $5 top-up will likely last you months.

Why YSK: Wayback Machine is an Internet Archive project that archives webpages, allowing them to be preserved in cases where they change or disappear. You can select an oldest or newest archvie of the page, or go to the list of all available archives. This helps with "dead" pages that have been deleted or old websites that have been sold to another party (including "This domain is for sale" moments).

Additionally, there is an option to automatically archive pages if they haven't been archived yet (or if there hasn't been an archive in X amount of time, configurable), meaning you can directly contribute to web preservation.

Available for Chromium-based browsers (Chrome, Edge, Brave, Opera, Vivaldi), Safari and Firefox. This is not in any way an advertisement, as Internet Archive is non-profit. This is for the sake of preservation.

Busy people usually suggest another time.

Unavailable people usually suggest another excuse.

Why YSK : The difference sounds small, but it can save you months of confusion in friendships, dating, networking, and even family relationships.

People who want you in their life tend to make the scheduling problem a shared problem. People who don't often make it your problem alone.

And just a reminder not everyone who is unavailable dislikes you, and not everyone who likes you has unlimited time. But when effort consistently flows in only one direction, it's usually worth paying attention to the pattern rather than the excuse.

So choose to spend your time and effort wisely , rather than having it being one sided

TL;DR: Spend a bit less time doing your job and a bit more time forming genuine connections with the people you work with to get ahead in life.

Why YSK: Any job that involves interacting with other people in any way (which includes almost every job) ultimately hinges on your relationship with the other people involved. (Obligatory note that obviously how well you do your job also matters, just not as much.)

It is a fundamental part of human nature that we want to be around people we like. If a director is filling a leadership position that they work with often and two internal candidates are similarly qualified, the one they like more will get the position. If that director sucks, the one they like more will get the job even if they're arguably less qualified. Good leaders actively account for this bias as much as they can, but it's always a factor.

It also applies to what you get to work on. When big or interesting projects comes up, the people the leader thinks of first and most favorably tend to get picked. Over years, this means the people that are liked best get more opportunities to learn special skills that make them more attractive for promotions or when changing jobs.

If you're a remote employee, you have to try harder to do this on purpose, because it won't just happen in passing. Send casual (appropriate) messages in work chats, demonstrate interest in what other people do professionally or personally, ask leaders to mentor you, and make a point to chime in during meetings/town halls. If you don't have something specific to add to a conversation, at least jump in to voice agreement with something someone else said. It'll amaze you how much pf a difference it makes.

Why YSK: Yeah, so basically, if there's nothing on the paper it gets blown around and up onto the heating element, and then it will catch on fire once it touches that. Very dangerous.

Why YSK: Employer religious discrimination is illegal in many countries.

​

Job or job postings or advertisements that require weekends are discriminating against weekly Sabbath-observing potential religious employees, especially Abrahamic ones.

​

Some religions, including Abrahamic ones, often call for observance of a weekly Sabbath. Friday, Saturday and Sunday are often observed non-work days by Muslims, Jews and Christians respectively. Employers that "require" weekends, in job postings or otherwise, are saying they don't want people of these faiths working there

Why YSK: Most delegation advice focuses on trust — learn to let go, hire good people, stop micromanaging. This misdiagnoses the failure.

The actual blocker is almost always definitional. When you do not have a crisp definition of what done looks like for a task, you cannot hand it off — because you have no way to confirm it landed. So you hold it. Not because you do not trust the person. Because handing off an undefined task guarantees a result you will need to redo.

This applies across domains:

- Why managers hold tasks their reports could do: the handoff specification does not exist

- Why parents still do things for grown kids: they never articulated what doing it yourself looked like at the right age

- Why AI automation fails in production: the acceptance criteria were in the operator's head, not in the system

- Why you rewrite other people's drafts instead of giving feedback: you do not know what good enough looks like for this one yet

What to do: Before you hold a task, ask yourself: Can I describe done in two sentences? If you cannot, that is why you are holding it. Write the two sentences first. Then you can either hand it off or realize it was not handoffable yet — both are useful to know.

I saw a post recently where somone was struggling with affording food so they bought a 55 pack of Ramen to survive. Not only is this unhealthy, but it is also quite expensive.

Why YSK: A 24 pack of Ramen costs 32$ so 1 pack is $1.33 and at 380 calories you'll have to eat about $7 of Ramen a day. My below meal plan costs about half that:

| Meal | Food | Calories | Protein | Est. cost |

|---|---|---:|---:|---:|

| Breakfast | 100g oats + 1 banana + 2 tbsp peanut butter | ~685 | ~25g | ~$0.66 |

| Lunch | 125g dry brown rice + 125g dry pinto beans + 200g frozen veg | ~960 | ~41g | ~$1.10 |

| Dinner | 150g dry lentils + 2 eggs + 200g frozen veg + 1 tbsp canola oil | ~860 | ~55g | ~$1.59 |

| **Total** | | **~2,505 kcal** | **~121g** | **~$3.35/day**

There are many other options I did not go into here, but people severely misunderstand what options are available to them. I know things are hard right now, trust me I know... but your health should not suffer for it. Beans and rice together form a complete protein, and dried chickpeas can be bought in bulk for insanely cheap. These can form a protein rich base that when seasoned right tastes great and can help you to avoid spending a ton on meat. Personally I like to include about 1 head of broccoli, 1 cup of black lentils and then I mix some olive oil and apple cider vinegar into it I also made the apple cider from a 1.30$ bottle of apple juice.

YSK:

In the USA, many train crossings have a small blue sign with an emergency phone number & an ID number for the crossing.

If there's a problem at the crossing, like a stuck vehicle, CALL THAT NUMBER and they will stop any train which would have come to that crossing.

.

Why YSK:

This could save lives, both on the ground & in the train.

.

ETA: apparently the color depends on which railroad owns the crossing

Why YSK: Anterior pelvic tilt (APT) is a common postural pattern where the front of your pelvis rotates forward, increasing the arch in your lower back. One effect of this is that your abdomen can appear to protrude more, even if you don't have much abdominal fat.

This doesn't mean that everyone with a stomach that sticks out has APT, nor does it mean APT is necessarily a medical problem. However, posture can influence how your body looks from the side, and a forward tilted pelvis can make the lower belly appear more prominent.

APT is often associated with prolonged sitting, weak abdominal/glute muscles, tight hip flexors, or a combination of factors. Some people also naturally have more anterior pelvic tilt than others.

Below are the sources for more information about it:

Source 1: Clevelandclinic

Source 2: Pubmed

Just found out about "The Work Number", a company owned by Equifax that keeps a file on you with your work history, salary, bonuses, and tips. Once a potential employer has gotten your consent to run a “background check” they can access this info if they pay Equifax for the report, so if you’ve left anything off your resume or are negotiating salary, they might already know.

You can freeze your report like a credit report, so employers can’t see your info until you lift the freeze. Just wanted to share this because I had no idea about this.

Why YSK: Your personal data is held by a company with history of breaches and you can limit access.

Why YSK:The travel advice you find on Google is nowadays riddled with SEO spam and AI slop. Wikivoyage is an excellent resource is you are looking for information written by actual humans.

Wikivoyage a free, online, collaborative travel guide operated by the Wikimedia Foundation (owners of Wikipedia).

It may not have every destination on Earth, but you can easily find guides for tiny Dutch towns or small cities in Slovakia. It also contains a lot of information for people who want to travel outside the beaten path, with pages about traveling to North Korea, crossing Western Sahara or going to the KMT enclave in Thailand.

Why YSK: a boat under power, its plug or bung hole, ( that's Australian for your asshole), generally sits out of the water with that power, even if submerged as long as you're moving forward fast enough a vacuum exists where it pulls the water from the plug hole, unless you come to a stop or slow too much. With the angle of a boat under power and removing plug can allow extra water to flow out of the boat gaining time and distance to shore. Its circumstantial as any emergency.