fusion

What it takes to fuse hydrogen isotopes — the four conditions (temperature, density, confinement time, energy gain), the three main approaches (magnetic, inertial, magnetized target), the engineering problems (tritium, neutrons, materials) that remain after the physics is in hand.

What "multimodal" actually means once you get past marketing copy. How modern models like GPT-4o, Gemini, and Claude blend modalities, and the design trade-offs (early vs late fusion, native vs adapted) you'll meet when building with them.