A lot of people hesitate to buy second hand tech when updating their phone/laptop etc, fearing it may be damaged, or the components will be worn out already.

Their instinct is probably to look at brand new consumer models at retail stores instead.

This is a mistake.

1. Businesses Over-Spec and Constantly Cycle Tech

Corporate IT departments don't buy the cheap, baseline models. They buy high-performance machines with fast processors, plenty of RAM, and durable builds so their employees face zero downtime. Furthermore, many corporations operate on strict 2-to-3-year lease cycles. When the lease is up, they replace thousands of perfectly working, high-spec machines. These enter the refurbished market at a massive discount, often outperforming brand-new budget consumer laptops.

2. Business Tech is Built to Last (Unlike Consumer Tech)

Consumer laptops on a budget are usually made of cheap plastics, have weak hinges, and aren't meant to be repaired. Business-class machines are designed for the road. They feature magnesium alloy or carbon fiber frames, spill-resistant keyboards, and modular designs. If a part breaks three years down the line, you can easily buy a cheap replacement part on eBay and fix it with a standard screwdriver.

3. It’s Significantly Better for the Environment

Manufacturing digital tech is incredibly resource-intensive. The "embodied carbon" (the carbon footprint generated just to mine the raw materials and assemble a single laptop) makes up roughly 70–80% of its total lifetime emissions. By purchasing a refurbished machine, you are:

-Keeping heavy metals and e-waste out of landfills.

-Saving thousands of gallons of water used in manufacturing.

-Directly lowering the demand for new resource extraction.

4. Reliable Resellers Are Incredibly Easy to Find

You don't have to risk your money on sketchy classified sites. Platforms like Amazon, eBay, and BackMarket have highly structured systems for this:

Amazon Renewed: Look for listings explicitly backed by the "Amazon Renewed Excellent" or "Premium" guarantee. They have strict diagnostic tests and come with a minimum 90-day (often 1-year) return policy.

On EBay: look for major corporate liquidators with 90%+ positive feedback scores. They chemically clean the machines, test the batteries, and often install a fresh, legal copy of Windows.

To illustrate it, here is an example of a budget (less than £300) consumer laptop - and the equivalent refurbished business model you can purchase for a similar price:

https://www.argos.co.uk/product/7931426

https://www.amazon.co.uk/Savitar-Technology-LTD-Latitude-5400/dp/B0GPDXBX2Z

The first, is a £250 laptop designed to be a £250 laptop. The second is a former business model, that although a few years older, cost over £1000 when it was brand new. It has 4 times the memory and storage - is built to last - and can be easily upgraded yourself with just a screwdriver and the new parts. The consumer model is designed to be thrown away when it breaks.

Why YSK: Knowing how to source refurbished enterprise hardware allows you to stop overpaying for cheap consumer-grade electronics that break after two years. It helps you improve your financial literacy by maximizing your purchasing power, while simultaneously reducing your personal carbon footprint and electronic waste. Reliable and experienced sellers are easy to find and sites like Amazon have entire sections dedicated to refurbished tech.

Stop wasting money on throwaway tech and start benefitting from cheap, resilient and comparatively overpowered business grade tech.

Have you ever gone through a highly stressful, dangerous, or adrenaline-pumping situation with a platonic friend, only to suddenly feel an intense, confusing wave of romantic or sexual attraction toward them?

You aren't crazy, and you might not actually be in love. You are likely experiencing a well-documented psychological phenomenon called the Misattribution of Arousal.

The Science:
According to the two-factor theory of emotion, our brains sometimes struggle to differentiate between different types of physical arousal. When you experience fear, stress, or a massive adrenaline rush, your body reacts: your heart races, your palms sweat, and your breathing quickens. If you are with someone else during this time, your brain can easily misinterpret these physical survival signals as intense romantic or sexual chemistry.

In 1974, psychologists Donald Dutton and Arthur Aron proved this with the famous "Capilano Suspension Bridge Experiment." They had an attractive female researcher approach men on two different bridges: one low, solid, and safe, and the other a terrifying, wobbly suspension bridge 230 feet above a river.

The men on the scary bridge were significantly more likely to call the researcher later and write sexually themed stories in a follow-up test. Their brains completely confused the fear and adrenaline of the bridge with lust for the woman.

Why YSK:
Understanding this can save you from ruining a perfectly good friendship or making impulsive relationship decisions. If you suddenly feel a magnetic, undeniable pull toward a best friend or coworker after a crisis, a physical altercation, or a high-stakes situation, take a step back. It might be a genuine connection, but it could also just be your brain confusing adrenaline with desire.

Source / Further reading: Misattribution of arousal (Wikipedia / Dutton & Aron 1974)

Why YSK: i ran a few "free" VPN apps through tracker scanners after seeing weird ad targeting. one popular free VPN with millions of downloads had 14 third party trackers including data brokers. thats when i went deeper.

a recent Zimperium zLabs study analyzed 800 free VPN apps. findings included outdated OpenSSL libraries still vulnerable to Heartbleed (a bug from 2014), apps requesting permissions to read system logs (effectively keyloggers), microphone access, and screenshot capture.

separate research found 88% of top free Android VPNs leak user data, 80% embed tracking, 60% sell user data to third parties, and 39% contain malware.

heres the mechanic. running VPN infrastructure costs money. if the app is free with no subscription, the revenue has to come from somewhere. that somewhere is your data, ad injection, or surveillance contracts.

if you want to verify your own VPN:

- Exodus Privacy (open source tracker database)

- AppXpose (scans the APK directly on your android device)

- Mozilla Privacy Not Included (curated app reviews)

- Whois lookup on the parent company

the VPN you trust to hide you is probably the most exposed app on your phone.

Why YSK: Most people know that the "bullseye rash" is the number one indicator of Lyme disease. However, only about 80% of patients even present a rash, and only about 20% of those present a bullseye appearance. In Europe, a bullseye pattern is much more common. This is due to the different strains of the bacteria present in ticks that cause Lyme disease.

In media, it's often repeated that Lyme CANNOT be the diagnosis if the bullseye rash is not present, but this is false. The most dangerous thing about Lyme disease is that people often don't realize they've been bitten by a tick, so it gets under diagnosed. If you've been bitten by a tick, monitor the site for a rash, but keep in mind that rashes don't always present. Pay attention to other symptoms as well.

https://tools.cdc.gov/podcasts/media/pdf/EID_08_21_LymeDiseaseUSeurope.pdf

https://www.hopkinslyme.org/lyme-disease-awareness/lyme-disease-rash-presentations-may-not-be-what-you-think/

It shouldn't really need to be said that if something is soaked and then squeezed, and the flavor of the output/product changes relative to simple soaking, that the resulting extract has become "stronger".

To give an example of a compound everyone is familiar with, in the case of tea, a typical 4 minute extraction leaves about 25% of the caffeine still trapped in the leaves. More important are the major antioxidants in green tea like EGCG, EGC, and EC. All of these have a bitter taste. They are all catechins (sometimes called tannins), and they all dramatically increase in concentration when a tea bag is squeezed. Catechins are flavonols/flavonoids, which are a type of polyphenol, and the ones found in green tea are often said to be some of the healthiest things a person can consume. Other teas like black and oolong have their own distinct polyphenols with their own, unique health benefits, but the concentration of all of them increases in your tea when the tea bag is squeezed. Almost all of these are bitter as well.

Why YSK: If you simply steep a tea bag for a few minutes and throw it away, you have discarded the bulk of the beneficial compounds that tea contains, and are most definitely drinking "weaker" tea.

I see people do this all the time: they brew a cup of tea, pull the bag out, and tightly squeeze it against the spoon to get every last drop.

Stop doing this. You aren't getting more tea, you are just extracting tannins.

The good stuff (the amino acids and caffeine that give tea its smooth flavor) extracts easily into the hot water while it steeps. But tea leaves are also packed with tannic acid, which is incredibly bitter. During a normal steep, most of those bitter compounds stay locked safely inside the leaf.

When you physically crush the bag, you force those concentrated tannins directly into your mug. It completely kills the flavor profile and leaves a harsh, dry feeling in your mouth.

Next time, just pull the bag out, let it drip for a second, and toss it in the bin. Try it tomorrow morning and I promise you'll notice how much smoother your tea tastes.

Why YSK: Squeezing the tea bag releases high concentrations of bitter tannic acid (tannins) that ruin the actual flavor profile of the tea, turning a smooth cup harsh and dry instead of making it "stronger."

Why YSK: The tannins in tea bind to non-heme (plant-based) iron and prevent your body from absorbing it. Worth knowing if you're vegetarian or anemic. Wait about an hour after eating

Why YSK: it makes for a tasty and refreshing beverage served either hot or cold. Welcome to r/teafacts.

Why YSK: if you find caffeinated beverages unpleasant or inconvenient, there's an easy, cheap, and effective alternative.

I don't like the taste of coffee and generally avoid it. I have tea occasionally but it can be kind of a pain to deal with brewing it and dealing with existential questions like whether I should squeeze the teabag. If I want caffeine in the morning, I usually take it in pill form.

One advantage is that you know exactly how much you're getting. It's a very consistent dosage. And you can adjust it based on how tired you are and your level of tolerance. I actually don't use caffeine much these days so I tend to use a pill cutter to take a half or even a quarter of a pill. But in the past I'd sometimes take a full pill.

I know some people love coffee/tea/etc for many other reasons and find this idea horrifying. That's OK.

I'm not naming a specific brand because the one I use is local and won't help most users here. But I'm sure you can find them if you look. One day I just walked into a pharmacy and asked for caffeine pills, that's it. It doesn't need other ingredients.

Why YSK: using water that’s too hot, especially for green or white tea, can make your tea bitter and ruin the flavor. Slightly cooler water gives a sweeter taste and makes even cheap tea taste better.

According to me. I like to put a little milk in mine. Spices it up.

Why YSK: in case you haven’t tried it, you’re really missing out.

those springs are under an insane amount of tension just to lift a massive heavy door
if you slip with a wrench or the spring snaps it holds enough kinetic energy to literally sever your hand or kill you instantly
just pay a professional to do it because it is absolutely not worth the risk
Why YSK: trying to fix a broken garage door torsion spring without professional tools can result in immediate death or losing a limb due to the extreme tension