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Wondering what your air conditioner really adds to the electricity bill? Estimate energy use by multiplying power consumption by operating time and load factor, then compare your household’s total bill before and after AC use under Korea’s tiered rates. #ElectricityCosts

OpenAI has reshaped the cost-speed equation for GPT-5.6. Luna now costs $0.20 per million input tokens and $1.20 per million output tokens, while Sol’s Fast mode offers up to 2.5× the speed at twice the Standard price. The practical strategy: use Sol for planning and Luna or Terra for execution and verification. #OpenAI

AI can make a task faster without making the business more profitable. First, compare demand generation, purchase conversion, and service delivery to find the real constraint. Then eliminate unnecessary work, simplify the process, and automate what remains. #BottleneckManagement

When every report and decision lands on one leader’s desk, diligence cannot prevent an organization-wide bottleneck. Effective delegation means defining decision authority, limits, and exception-reporting rules—while giving employees room to build judgment and responsibility. #Delegation

A registered maximum mortgage amount is not necessarily the landlord’s current loan balance. Before paying a jeonse deposit, review the property register by section, compare claims and deposits with market value, and check senior tenants, taxes, trusts, and later changes in rights. The 70% guideline is only a rule of thumb—not a legal guarantee. #DepositProtection

Could healthier habits earn you useful points? The Healthy Lifestyle Incentive Program offers separate preventive and management tracks, with potential earnings of up to 120,000 or 80,000 points. Eligibility, participating regions, and deadlines vary, so check before applying. #HealthyLifestyle