90% of People Are Wasting Tokens

90%的人在白白浪费"Token"！

Andrej Karpathy says 90% of AI coding bills is wasted on unnecessary context, including repeated full-repository sends, expensive models for simple tasks, and missing prompt caching.

Why it matters: HKR-H/K/R all pass via the 90% claim, named waste mechanisms, and practitioner cost pain. It reaches featured, but stays at 72 because the post gives no billing sample or reproducible test.