不要浪費錢，你冷靜想喇，如果玩交易可以這麼容易翻倍，換作是你，你會跟別人分享嗎？
要知道，交易市場（尤其是合約、期權）是零和遊戲，你多賺一點，我就少賺一點。
用人性來思考，是我我就只跟我的死黨和比較熟的人一起玩，輪也輪不到一群我不認識的人。
如果你有做過 marketing，或者認識朋友做 marketing的，你就會知道它們這種營銷手法叫做 upsell，用到很濫了。
其實很簡單的，如果 16888、20888、50888這些"升級課程"有用，為甚麼它們一早不要跟大家講？如果 50888那個 "終極課程" 最 work，為甚麼前面要搞一大堆"初級課程"？
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