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open· urban mobilityen
Why cities fail to adopt micro-mobility even when infrastructure exists
Bike lanes exist but usage remains low. The infrastructure argument doesn't explain adoption gaps.
→ The bottleneck is modal switching cost, not infrastructure. The first 200m from home to the bike lane is the actual barrier.
open· food systemsen
Fermented food knowledge transfer problem between generations
Grandmothers hold the real fermentation knowledge. It doesn't get transferred because there's no structured way to capture tacit skill.
→ Video is insufficient. You need sensory annotation — smell, texture, timing intuition — not just visual steps.
open· startup epistemicsen
The 'overnight success' narrative destroys useful failure data
Startup post-mortems are written after fundraising or acquisition. The real failure reasoning disappears.
→ Branching decision logs written during the process have 10x more signal than retrospective post-mortems.
open· medical AIja
医療AIの現地化問題：症状の語彙は文化で異なる
日本の患者が「だるい」「重い感じ」と表現する症状は、英語の医療訓練データに存在しない。
→ 症状の記述語彙を言語ごとに構造化するだけで、診断精度が上がる可能性がある。
dormant· fintech regulationen
Regulatory sandboxes create knowledge islands, not transfer
FinTech sandboxes in Singapore, UK, UAE operate with different rules. The learnings don't cross borders.
→ The sandbox model optimizes for local speed, not global learning. No mechanism exists to export the regulatory reasoning, only the outcomes.
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