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Tech & the Internet?

What the machines are actually doing, in plain English. 30 questions and counting.

What is AI, in plain English?AI is software that learns patterns from enormous amounts of data instead of following hand-written rules. Chatbots spec…
How do you take a screenshot?Windows: press Windows key + Shift + S and drag over what you want. Mac: Command + Shift + 4. Whole screen: Print Screen…
What is Bitcoin, actually?Bitcoin is digital money with no bank behind it: a public ledger maintained by thousands of computers, capped at 21 mill…
What is the cloud, and where is my stuff?The cloud is other people's computers: your files live in data centers run by Amazon, Google, Microsoft, and Apple, copi…
What does a VPN actually do?A VPN encrypts your traffic and routes it through another server, hiding activity from your local network and your IP fr…
Should I use a password manager?Yes. Reused passwords are how accounts actually get hacked, and a manager makes every login unique without your memory i…
Why is my internet so slow?Run a speed test wired and on Wi-Fi. If wired is fast, the problem is your router's placement or age. If both are slow, …
What does incognito mode actually hide?Incognito only stops your own browser from saving history and cookies. Your internet provider, employer, school, and the…
Does restarting your phone actually help?Yes. A restart clears memory leaks, stuck processes, and misbehaving apps, which is why it fixes so much. Even the NSA r…
Why does my phone battery die so fast?Usually background apps, screen brightness, and an aging battery. Batteries chemically degrade to about 80 percent capac…
Is it bad to charge your phone overnight?No, modern phones stop charging at 100 percent, so overnight is fine. The real enemy is heat and sitting at a full charg…
What is 5G, and is it actually better?5G is the fifth generation of cellular networks, offering faster speeds and lower lag than 4G. The gains are real but un…
What is two-factor authentication, and do I need it?Yes, turn it on everywhere important. Two-factor means logging in needs your password plus a second proof, a code or tap…
Why is my computer so slow?Usually too many programs, too little memory, or a full or failing hard drive. The single cheapest fix for an old comput…
What are cookies on websites?Cookies are small text files websites store on your device to remember you, keeping you logged in, holding your cart, an…
How much phone or computer storage do I actually need?For most people, 256GB on a phone is the comfortable sweet spot, and 512GB on a laptop. Photos and video eat the most. C…
Why do I need to keep updating my software?Mostly security. Updates patch newly discovered holes that hackers actively exploit, which is why ignoring them is genui…
What is phishing, and how do I spot it?Phishing is a fake message impersonating someone you trust to steal passwords or money. The tells: urgency, a request to…
What is the difference between Wi-Fi and the internet?Wi-Fi is the wireless link between your device and your router; the internet is the global network beyond it. Wi-Fi can …
Is it safe to use public Wi-Fi?Safer than it used to be, because most sites now encrypt traffic with HTTPS. The real risks are fake hotspots and unencr…
What is the difference between RAM and storage?RAM is short-term working memory for what you are using right now; storage is the long-term shelf where everything is ke…
How do I know if my phone has a virus?True viruses on phones are rare, especially on iPhone. Real signs are pop-up ads, rapid battery drain, unknown apps, and…
What does airplane mode actually do?It shuts off your phone's wireless transmitters, cellular, Wi-Fi, Bluetooth, so the phone stops sending and receiving si…
Why does turning it off and on again actually fix things?Restarting clears the device's temporary memory and stops whatever software got stuck in a bad state, giving it a clean …
Do I really need antivirus software anymore?On Windows, the built-in Microsoft Defender is now genuinely good and enough for most people, no paid suite required. Ma…
Do you actually need a VPN?Most people do not. Nearly all web traffic is already encrypted by HTTPS, which addresses the public Wi-Fi threat VPN ad…
What should you do if your data is in a breach?Change that password and every reuse of it, turn on two-factor authentication, and freeze your credit at all three burea…
How can you tell if a website is legitimate?The padlock means encrypted, not honest, and scam sites have it too. Check the exact domain spelling, look for a real ph…
Why do phones and computers get slower over time?Mostly because software grows heavier while your hardware stays the same, plus storage filling up and battery aging. Del…
Which type of two-factor authentication is actually best?Hardware security keys are strongest, authenticator apps are a good default, and SMS codes are the weakest but still far…