Scratch Cards Are a Death Trap for the Poor: The Expected Value Math
You hand over NT$50 for a scratch card and lose more than NT$50. Taiwan Lottery Corporation public data shows the overall payout ratio is about 60–70%, meaning you lose NT$30–40 in expected value for every NT$100 spent — this is not bad luck, this is a certain loss. According to the Directorate-General of Budget, Accounting and Statistics (DGBAS) Household Income and Expenditure Survey, low-income households spend a much higher share of disposable income on gambling than high-income households. This article breaks down three底层 rules of scratch cards (certain loss, near-miss effect, opportunity cost), two Taiwan-specific advanced traps (information asymmetry in prize announcements, house money effect), an expected-value filter decision framework, 4 iron rules, and 4 action steps. Finally, we run the numbers: spending NT$500 per month on scratch cards for 20 years carries an opportunity cost of roughly NT$270,000–NT$300,000. Most dangerous is the lottery design itself, where small frequent prizes reinforce purchasing behavior rather than provide profit. Get out of this negative-expected-value death loop and start building real wealth instead.