Explore Capsules

Quantum machines promise revolutionary power yet struggle to hold a calculation together. These views clash over whether the path forward is hardware breakthroughs, taming noise and scaling up, or tempering the hype to focus on near-term applications and business value. See where the field genuinely stands before betting time or money on it.

Science earns its authority by making predictions that could fail, and string theory doesn't. Against its popularity among physicists, the argument here places untestable theory closer to metaphysics than physics, however elegant the math. Taking this view means judging every theory by whether an experiment could ever prove it wrong.

GPS accuracy depends on precise clock synchronization between satellites and receivers, and that synchronization requires Einstein’s relativity. Readers will understand how satellite motion, gravitational effects, orbital shape, and Earth’s rotation influence GPS timing, and why correcting for these effects is essential to the location accuracy used every day.