Evolutionary neophobia explains resistance

Remember when a red envelope felt like magic? Not for the cash inside, but for the luck it carried. Somewhere along the way, that magic got replaced by a calculator. With campaigns now capping the cash, can we save the hongbao from the 'monetary arms race'? / Decoding the picky eater (18:36). On the show: Steve, Fei Fei & Yushun.