Archives: Cards

What’s the difference between GPT, Claude, and Gemini, really?

Under the hood All three are massive neural networks predicting next tokens. The architecture differences matter much less than people think. Same family, different siblings. Where they actually differ Training data composition. Reinforcement learning from human feedback shapes ‘personality.’ Tool-use plumbing differs (Gemini’s tied to Google search, Claude has Artifacts, GPT has DALL-E + Code…
Will an AI take my job?

Historical pattern Spreadsheets didn’t kill accountants. ATMs didn’t kill bank tellers. The roles changed. Both professions employ MORE people now than before the technology arrived. What actually changes The tools amplify some part of the job. Junior tasks (drafts, summaries, boilerplate) get cheaper. Senior judgement gets MORE valuable, not less. What to do Use it.…
When AI ‘hallucinates,’ what’s actually happening?

The mechanism Large language models predict tokens. When asked something they don’t know, they don’t have a ‘say I don’t know’ instinct — they just keep predicting plausible-looking tokens. Why it sounds confident Plausible text is what they optimize for. Confident-sounding wrong answers ARE perfectly-optimized output from the model’s perspective. The training reward shaped this.…
Why does every app want my location?

The economics Free apps have to make money somewhere. Anonymized location data sells for around 10 cents per user per month. Across millions of users, that’s the entire business model. The honest signal A flashlight app asking for location is selling your data, full stop. A weather app asking is using it. The ratio of…
Is incognito mode actually private?

What it does Doesn’t save history, cookies, or form data locally after you close the window. That’s the entire feature. The browser forgets what you did. Nothing else does. What it doesn’t Hide your IP from sites. Hide traffic from your ISP. Hide activity from your network admin. Block trackers. Encrypt anything. Make you anonymous.…
What does USB-C ‘PD 100W’ actually mean?

The spec USB-C PD lets two devices negotiate voltage and amperage. 100W = 20V × 5A. Lower-power devices ask for less; the brick obliges. In practice A 100W brick will charge a laptop at 100W AND a phone at the phone’s max (e.g. 27W on iPhone 15 Pro). One charger replaces three. The cable trap…
Why does my Wi-Fi crawl at 8pm exactly?

The pattern Speeds are great at noon. Garbage 7-10pm. Same router, same devices, same physics. Something else is the bottleneck. What is actually slow Not your Wi-Fi. Your ISP’s local node serves dozens of homes, and at peak hours everyone on it is pulling video. The pipe to the rest of the internet is shared…
Is sunscreen actually safe long-term?

The fear A 2019 FDA study showed chemical UV filters absorb into the bloodstream after one day of use. People panicked, headlines spun. The actual paper was more measured. What it meant Detection is not harm. The FDA didn’t say ‘stop wearing sunscreen’ — they said ‘we want more data.’ Skin cancer is a leading…
Does retinol actually thin your skin?

The confusion People feel their skin get smoother and a little raw, then assume it’s getting thinner overall. Mechanically it’s the opposite of what’s happening. What is happening Retinoids accelerate cell turnover. The stratum corneum (dead surface layer) gets shorter. The dermis (the structural layer underneath) gets thicker over months of consistent use. The catch…
Are seed oils actually trying to kill me?

The vibe You’ve seen the TikToks. Beef tallow good, canola oil bad, your inflammation is the sunflower’s fault. The truth is more boring: seed oils are mostly fine, but the foods they live inside are mostly not. The actual chemistry Seed oils are high in linoleic acid, an omega-6 fat. Modern diets skew omega-6 high…