<?xml version="1.0" encoding="UTF-8"?><rss version="2.0"><channel><title>Arun Karthik</title><description>Building innovative solutions from AI foundations to web frontiers.</description><link>https://arunkarthik.com/</link><item><title>Long Context Is a Lie: Why Your 100K Token Model Is Actually Making You Dumber</title><link>https://arunkarthik.com/posts/long-context-is-a-lie-why-100k-token-model-making-you-dumber/</link><guid isPermaLink="true">https://arunkarthik.com/posts/long-context-is-a-lie-why-100k-token-model-making-you-dumber/</guid><description>The AI industry&apos;s obsession with context length is a cargo cult. New research reveals that stuffing more tokens into your prompt makes models perform worse, not better - with performance drops of 50% on real tasks.</description><pubDate>Wed, 23 Jul 2025 10:00:00 GMT</pubDate></item><item><title>The Four Skills AI Can&apos;t Replace (And Why Most People Get This Wrong)</title><link>https://arunkarthik.com/posts/four-skills-ai-cant-replace/</link><guid isPermaLink="true">https://arunkarthik.com/posts/four-skills-ai-cant-replace/</guid><description>Everyone&apos;s peddling &apos;future-proof&apos; skills these days. After automating dozens of workflows, I&apos;ve identified four skills that actually matter—not because they&apos;re trendy, but because they exploit the fundamental gaps between human and machine intelligence.</description><pubDate>Wed, 23 Jul 2025 10:00:00 GMT</pubDate></item><item><title>RAG Reality Check: Why 80% of Implementations Fail</title><link>https://arunkarthik.com/posts/rag-reality-check-why-80-percent-implementations-fail/</link><guid isPermaLink="true">https://arunkarthik.com/posts/rag-reality-check-why-80-percent-implementations-fail/</guid><description>The $50B RAG market is built on a fundamental misunderstanding. Here&apos;s what actually works in retrieval-augmented generation—and what doesn&apos;t.</description><pubDate>Sun, 20 Jul 2025 11:00:00 GMT</pubDate></item><item><title>The AI Literacy Guide That Actually Matters</title><link>https://arunkarthik.com/posts/ai-literacy-guide-that-actually-matters/</link><guid isPermaLink="true">https://arunkarthik.com/posts/ai-literacy-guide-that-actually-matters/</guid><description>Most people using AI are driving Ferraris in first gear. Learn the 26 core concepts that separate power users from casual browsers and unlock expert-level output from any AI model.</description><pubDate>Sun, 20 Jul 2025 10:00:00 GMT</pubDate></item></channel></rss>