You said all. OP is just misguiding investors as no trader will be consistent at any market. Trading is not that easier for making sure-shot profits.  OP is explaining his system just like depositing money into bank for interest gaining. Because, only with banks we can make use of the compound interest more effectively. But for the case of trading if you go for re-using your profits for your trading as part of capital again and again then there will be plenty of chances you will lose all of your capital which is consisting of your so-far-profits too. It means your multiple days efforts will go in vain in just in one day.

I just agree that compound interest is as marvelous as anything else but when the system is not capable enough then what is the use of just calculating in papers.