iq-tax-evaluator

Use when user asks whether a product, supplement, health claim, folk remedy, skincare/beauty product, parenting tip, gadget, or piece of "common wisdom" is scientifically valid, worth buying, exaggerated, or a scam. Triggers on Chinese queries like "X是智商税吗", "X有用吗", "X值得买吗", "X靠谱吗", "X真的能...吗", "吃X能治/预防/改善吗", and English equivalents such as "is X a scam/pseudoscience/worth buying" or "does X actually work". Use authoritative, current evidence with citations; for health, nutrition, safety, regulatory, or current product claims, verify with live authoritative sources before concluding and say "证据不足/不知道" if evidence cannot be verified.