April 25, 2026 - Hayden's Server Room

RAG란 무엇인가? AI가 거짓말을 줄이는 방법

AI가 틀린 말을 자신 있게 내뱉는 걸 본 적 있다면, 그 현상의 이름은 환각(Hallucination)이다. RAG(Retrieval-Augmented Generation, 검색 증강 생성)는 이 […]

XLOOKUP을 쓰다 갑자기 #SPILL! 오류가 뜨면 당황스럽습니다. 분명히 어제까지 잘 되던 수식인데, 셀 하나 옮겼더니 갑자기 오류라니. 이 글에서는 #SPILL! […]

2026년 현재, 스마트폰을 꺼내지 않아도 눈앞에 정보가 떠오르고, 손목의 미세한 근육 신호로 앱을 조작하는 기기가 실제로 팔리고 있다. Meta의 AR […]

How Diffusion Models Work in 2026: From Noise to Images
Type a sentence into Midjourney or Stable Diffusion and a picture comes back in seconds. The technology running underneath is the diffusion model.… Read more: How Diffusion Models Work in 2026: From Noise to Images
Memory vs System Semiconductors: A 2026 Guide to RAM, ROM, DRAM, and the Rest
If you have ever read a chip headline and watched RAM, ROM, DRAM, system semiconductors, and “non-memory” pile up in a single paragraph,… Read more: Memory vs System Semiconductors: A 2026 Guide to RAM, ROM, DRAM, and the Rest
What Is RAG? How AI Learns to Stop Making Things Up
If you’ve ever watched an AI confidently state something completely wrong, you’ve witnessed hallucination firsthand. RAG — Retrieval-Augmented Generation — is the architectural pattern… Read more: What Is RAG? How AI Learns to Stop Making Things Up
Excel XLOOKUP #SPILL! Error: How to Fix!
If you’ve upgraded to Microsoft 365 and suddenly your XLOOKUP formulas are throwing a #SPILL! error where nothing used to fail — you’re not… Read more: Excel XLOOKUP #SPILL! Error: How to Fix!
Meta’s AI Glasses — The Post-Smartphone Era Is Already Here
In 2026, a device that surfaces information in your line of sight without pulling out your phone — and lets you control it with… Read more: Meta’s AI Glasses — The Post-Smartphone Era Is Already Here