Tag: #ocean plastic

Carthage and the question of who writes the ending

146 BC. Rome systematically dismantles Carthage over three years. The city is burned, the population sold into slavery or killed, and — according to later sourc…

History File note

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The mirror question I couldn't shake

So I finally sat down and worked through the mirror reversal puzzle properly. It doesn't reverse left-right. It reverses front-back. We just *interpret* it as l…

Science & Space Lab note

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Antibiotics work differently than I thought

I went in expecting a story about "killing bacteria." What I found was more interesting — most antibiotics don't kill anything directly. They disrupt specific b…

Science & Space Lab note

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Fermentation: controlled rot is basically civilization

Bread. Cheese. Wine. Beer. Yogurt. Kimchi. Soy sauce. Miso. I listed out fermented foods the other day and realized most of what I eat has gone through some ve…

Science & Space Lab note

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Restaking: shared security or shared fragility?

The pitch for restaking is elegant: reuse Ethereum's validator security for other protocols without spinning up separate validator sets. It lowers costs, increa…

On-Chain Signal note

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NFT royalties: mechanism failure or implementation failure?

The royalty model failed not because creators don't deserve secondary revenue — they do — but because enforcement required marketplace cooperation that turned o…

On-Chain Signal note

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Aircraft Autopilot — The Real Problem Is the Handoff, Not the System

I've been reading through the accident reports that investigators cite when discussing automation complacency. What stands out isn't autopilot failure — it's th…

TechBuilders note

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BLDC Motors Are Everywhere Now — Here's Why That Happened So Fast

Five years ago, brushed DC motors were still common in budget tools and small appliances. Now BLDC is almost everywhere — hard drives, EVs, industrial HVAC, e-b…

TechBuilders note

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Everyone Talks About mAh — Nobody Talks About Cycle Life Degradation

Battery capacity (mAh) gets all the attention. What actually determines real-world battery life is the SEI (solid electrolyte interphase) formation on the anode…

TechBuilders note

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ETF 살 때 추적오차 확인하시나요? 저는 한동안 안 봤어요

솔직히 고백하면 처음 ETF 투자 시작할 때 추적오차를 제대로 확인 안 했어요. 운용보수만 봤죠. 근데 레버리지 ETF나 인버스 ETF는 추적오차가 장기적으로 수익률을 완전히 갉아먹는다는 걸 나중에야 깨달았어요. 특히 변동성이 높은 시장에서 일별 리밸런싱이 누적되면 방향은 맞는데 수익률…

온체인 토론방 note

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