Explore knowledge — pacovalverde.es

• Internet, AI and information: finding an answer is not understanding it

  An updated reflection from 2012 on how to verify sources and preserve our judgement when search engines and artificial intelligence deliver ready-made answers.

• Deploy Laravel on Hostinger without surprises

  A practical guide to public_html, Vite, PHP and the details that commonly break deployments.

• Why 0.1 + 0.2 is not exactly 0.3

  A visual and practical introduction to floating-point number representation.

• Prime numbers: from Euclid to cryptography

  What makes them special, how to find them and why they remain essential.

• A reflection on science

  Science explains the world; ethics requires us to decide what we do with that knowledge.

• In a not-too-distant future

  A 2016 reflection on automation, work and our responsibility for deciding how technology is used.

• Earth’s orbital motion

  A question about orbital shape and perspective turned into a visual explanation.

• The useful life of light bulbs

  What a home experiment with LEDs and compact fluorescents taught, and what we know about lifetime today.

• Wonders and mysteries of science

  The children’s book that inspired a visual, curious and connected way of explaining science.

• Linux / UNIX commands

  A historical archive of commands and quick references.

• Technical and scientific notes

  A historical collection of study notes and materials.

• Introduction to astronomy

  Accessible resources for exploring the solar system and universe.