The Powerbeats Pro 2 ($250) was hardly a secret. Although Beats officially announced the new fitness-focused earbuds today, it has been teasing them since last September. And over the last few weeks, [...]
“When you get a demo and something works 90% of the time, that’s just the first nine.” — Andrej KarpathyThe “March of Nines” frames a common production reality: You can reach the first 90% [...]