Social

Korea has crossed the conventional threshold for a super-aged society. In 2025, 10.72 million residents were 65 or older—20.7% of the population. That share is projected to approach 40% by 2050, with major implications for work, pensions, healthcare, and communities. #PopulationProjections

A 2x or 3x leveraged ETF targets a multiple of each day’s return—not the asset’s total return over your holding period. Daily resets can create volatility drag, so you may lose money even if the underlying asset returns to its starting price. Review costs and maximum-loss scenarios before investing. #InvestmentRisk

Wondering whether a routine health checkup is covered by indemnity medical insurance? Preventive screenings are generally excluded, but follow-up biopsies, polyp removals, tests, or treatment may qualify. Keep itemized statements and procedure records—not just a card receipt. #InsuranceClaims

AI-native development is less about clever prompts and more about designing a reliable system for delegated work. Learn how managed specifications and constraints keep agents on track—and why teams should measure defects, rework, cost, and review burden instead of code volume. #AINative

Long before Lotto, Korea had Maningye—a late-Joseon pooled-fund drawing that resembled, but was not legally identical to, a modern lottery. Follow the story through the 1969 Housing Lottery to Lotto 6/45 and today’s Lottery Fund. #LotteryHistory

“No outdoor unit” doesn’t mean no heat exhaust. Window ACs release heat from the rear, while portable units send it outside through a hose. Before installing, check hose limits, vent clearance, drainage, and full-tank shutoff conditions. #PortableAC