Pragmatism

Everyone’s Obsessed With AI. YC’s President Just Bet on Rails. Here’s Why.

Garry Tan, Y Combinator’s president, is speaking at a Ruby on Rails conference in 2026. While the tech world obsesses over AI and Python, YC’s smartest founders still bet on Rails for speed and pragmatism. AI code generation won’t kill Rails—it’ll make it unbeatable.

The Sand Battery Revolution Doesn’t Care About Your Electricity Obsession

Finland’s sand battery doesn’t convert heat back into electricity—it keeps it as heat, solving the storage problem for half of global energy demand. The lesson: the clean energy future isn’t one universal battery, but a patchwork of pragmatic, local solutions that match the physics of the problem. Stop trying to boil the ocean when all you need is a kettle.