Probability
Odds - chances of winning against chances not winning
P(E)= A/ (A+B)
Where
A =odds for event to happen
B=odds for event not to happen
Expected return (ie long run average)
E(X)=Average win - average lost
身體出現問題，要將投資放下。想想如何能做到 stress free 的投資。可能全權放給別人（買index fund或基金)是一個好選擇
反正自己嘗試了這麼久，到頭來還是蝕，不如放棄。
