Read issue #1 of Daily Digest, by Mailbrew Team.
9
Wednesday July, 2025
ELI5: Why do so many websites care that you're using a VPN?

Plenty of websites won't let browse them, if you're on a VPN. Why do they care? Many of them give generic login errors, if they're a site where you have an account, as if your password is wrong, instead of just saying, "Disable your VPN". What's the thinking here? Seems …

ELI5 Why does everyone use AWS, and what actually happens when it goes down?

Every time there's an AWS outage, half the internet seems to go offline. Why is there such a heavy dependence on it, and can anything be done to reduce that?

Eli5 Why does gallium have a high boiling point even though it melts easily in the palm of your hand?

Eli5 Why does gallium have a high boiling point even though it melts easily in the palm of your hand?

ELI5: Why do F1 cars look so different from normal cars, yet MotoGP bikes look very similar to normal bikes?

ELI5: Why do F1 cars look so different from normal cars, yet MotoGP bikes look very similar to normal bikes?

ELI5: If you bend a metal stick a little bit, it springs back, but if you bend it more, it stays bent. Why?

ELI5: If you bend a metal stick a little bit, it springs back, but if you bend it more, it stays bent. Why?

ELI5. Could black holes consume the entire universe?

ELI5. Could black holes consume the entire universe?

ELI5: Isn't the more powerful lifter still technically using more force and power via their muscles when lifting a weight to the same height more quickly?

The classic introductory physics example for differentiating power from energy is two powerlifters lifting the same barbell to the same height, except one does it more quickly. The amount of gravitational potential energy given is the same, but done in different amounts of times and thus at different speeds. But …

ELI5 The old UK pre decimalisation currency system?

How did it work, how could you workout what change to give if somebody bought something from you?

ELI5: What does a CDN actually do, and why are they critical for modern websites?

I keep hearing terms like Cloudflare, Akamai, Fastly - but what do they really do behind the scenes, and why do companies rely on them so heavily?

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