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In 2025, 20.7% of Korea’s population was aged 65 or older, crossing the super-aged society threshold. By 2050, that share is projected to approach 40%, though births, deaths, and migration could change the outcome. #Demographics

A 3x ETF does not simply deliver 3x an asset’s long-term return. Daily resets and compounding can magnify losses when prices swing, creating volatility drag even if the asset ends where it started. #LeveragedETF

Routine health checkups are generally not covered by indemnity medical insurance. However, follow-up tests or treatment for detected abnormalities may qualify—if your records, itemized costs, and policy terms support the claim. Read more : https://injoys.com/en/articles/health-screening-indemnity-insurance-claim-guide

AI-native developers don’t just prompt AI to write code. They define problems, set constraints, validate results, and remain accountable—while measuring defects, rework, cost, and review burden. Read more : https://injoys.com/en/articles/ai-native-developer-definition-and-practices #AINative #AIAgents

Korea’s lottery story stretches from late-Joseon Maningye to Lotto 6/45. One key fact: Lotto sales generally allocate 50% to prizes and about 41% to the Lottery Fund. Read more : https://injoys.com/en/articles/korean-lottery-history-from-maningye-to-lotto #Lotto

A portable AC still needs to expel heat. Without its exhaust hose in cooling mode, indoor heat won’t decrease—and the room may get hotter. Read more : https://injoys.com/en/articles/air-conditioner-without-outdoor-unit-exhaust-drainage #PortableAC