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Loop Engineering is more than better prompting. It designs a system where AI agents plan, execute, test, refine, and repeat until a defined goal is met. Two essentials: give the loop a safe workspace with clear roles and tools, and set stop conditions so productivity does not turn into runaway cost or risk #LoopEngineering

AI investing is no longer just a GPU story. This piece looks at where the next constraints may appear—power, cooling, data centers, cloud operations, and semiconductor substrates—and why investors should compare analyst revisions with business report figures before chasing a rally. #AIInvesting

Getting started with the Claude API can feel abstract until you run real examples. This guide points to Anthropic’s Claude Cookbooks: Jupyter notebooks for classification, summarization, RAG, chatbots, and document/image processing—plus a reminder to adapt prompts, inputs, evaluation, and safety settings for your own project. #AIDevelopment

From July, Korea’s National Pension calculation base is changing. The standard monthly income cap rises to 6.59 million won and the floor to 410,000 won; at 9.5%, the maximum monthly contribution becomes 626,050 won. Employees split the premium with employers, so your paycheck impact may be half of the total change. #Pension

VAT can be easy to misread as sales, but it isn’t part of your net income. This guide explains the basics: output tax minus deductible input tax, why supply price excludes VAT while consideration includes it, and when input tax may lead to a refund. #VAT

2026 VAT filing has more details to verify before you submit. Fraudulent tax invoice surcharges rise from 3% to 4%, and media content creators must submit cash sales statements or risk a 1% surcharge on unreported amounts. A quick records check now could prevent filing issues later. #TaxFiling