Cybersecurity
Can a QR code really be dangerous
Fast scan, routine gesture, underestimated risk: a QR code can redirect, trigger a payment or open a fake portal before you take time to verify it.
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Artificial intelligence
Why can an AI forget what you just told it
A smooth conversation can create the illusion of stable memory. In reality, available context, intermediate summaries and service design create real limits.
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Economics
Why do exchange rates move even without a crisis
The euro, the dollar and other currencies often move without a dramatic shock. Rate expectations, trade flows and risk perceptions are often enough.
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Technology
Why does a battery age even when you barely use your device
A lightly used phone or laptop does not escape battery aging. Time, heat, charge level and chemistry matter as much as visible use.
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Food
Are light products really better for health
Less sugar, less fat or fewer calories does not automatically mean a better choice. What was reduced, what replaced it and the wider diet still matter.
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Cybersecurity
Passkeys change login, not every risk
A stronger defence against phishing does not remove the need to protect devices, sessions and account recovery.
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Cybersecurity
Does a VPN really make you anonymous
A VPN mainly protects the path between your device and its server and moves the point of trust. It does not erase your identity, accounts or traces left elsewhere.
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Cybersecurity
Is public Wi-Fi still as dangerous as people say
Modern web encryption has reduced some historic hotspot risks without removing fake networks, phishing or poorly protected devices.
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Cybersecurity
Is an untested backup really a backup
Copying data is not enough. A useful backup strategy plans isolation, history, responsibilities and, above all, the real ability to restore.
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Cybersecurity
Does a password manager create a single point of weakness
Centralizing secrets can sound risky, but predictable password reuse is often riskier. The real question is the quality of the vault, its access controls and recovery path.
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Artificial intelligence
Can an AI service really guarantee the confidentiality of your data
The word “secure” is not enough. Architecture, retention, subprocessors and contract terms all matter before drawing a conclusion.
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Artificial intelligence
An AI agent can act, but with which permissions
When a system moves from answering questions to using tools, its allowed actions and stop mechanisms become central.
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Artificial intelligence
Why can AI invent a source with complete confidence
A generative model produces plausible sequences, not a guaranteed bibliography. A precise-looking reference can therefore be false even when every detail sounds credible.
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Artificial intelligence
Is an open model necessarily more transparent
Accessible weights, published code, an open licence and detailed documentation are different dimensions. The word “open” does not describe the whole system.
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Artificial intelligence
Does detecting a deepfake prove that the content is false
Detectors look for statistical or technical clues, but errors and rapidly evolving generators make it unsafe to turn one score into an absolute verdict.
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Economics
Inflation slows, so why does your bill not fall
A falling rate is not the same as a falling price level. The distinction matters for both economic statistics and household budgets.
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Economics
What do central-bank policy rates actually do
Central-bank rates influence the price of money across the economy. Their effect on a loan, savings account or business is real, but it passes through several channels and is never instantaneous.
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Economics
Why can GDP rise without improving your daily life
GDP measures production created within an economy, not how income is distributed or every dimension of quality of life. Growth and well-being can therefore move differently.
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Economics
What does purchasing power actually measure
Purchasing power compares disposable income with the price level. The average indicator is useful, but it cannot reproduce every household’s exact budget.
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Economics
Why public debt does not work like household debt
Governments and households can both borrow, but they do not share the same horizon, income base or refinancing capacity. The analogy can explain a principle and then quickly mislead.
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Technology
Does a more expensive smartphone last longer
Price, repairability, battery endurance and software support tell different stories. A premium label is not a lifespan measurement.
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Technology
Do two identical-looking USB-C cables really do the same thing
USB-C first describes the connector shape. Power, data speed, video and USB4 support then depend on the cable and the devices at both ends.
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Technology
Does good Wi-Fi mean you have good Internet
Wi-Fi connects your devices to the local network. An Internet connection then links that network to the wider world. Either link can become the bottleneck.
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Technology
Is cloud computing always cheaper
Cloud services turn infrastructure purchases into on-demand consumption. They can reduce some costs but add variable billing, transfer charges, operations and dependencies that need to be measured.
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Technology
Why can leaving a digital ecosystem be so difficult
Changing tools is not just exporting files. Formats, APIs, identity, history, automation and habits can create durable exit costs.
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Food
No added sugar is not the same as sugar-free
An on-pack claim describes a specific condition. It is not a substitute for the nutrition table or an assessment of the product as a whole.
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Food
Are all ultra-processed foods equivalent
The ultra-processed category draws attention to industrial formulation and processing, but it cannot by itself summarize nutritional quality or the risk of every individual product.
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Food
What does Nutri-Score actually tell you about a food
Nutri-Score summarizes selected nutritional characteristics to make product comparison easier. It does not capture every dimension of a food or of your overall diet.
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Food
Use-by and best-before: why the two dates do not mean the same thing
“Use by” addresses safety for certain highly perishable foods. “Best before” primarily indicates expected quality and is not an automatic switch from safe to dangerous.
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Food
Does more protein always mean more muscle
Protein is essential to muscle, but training response also depends on total energy, diet pattern, exercise and individual need. A supplement is not automatically necessary.
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