If in doubt...stay out.

Exactly. You need a far longer term analysis. EG here are the winning accounts for 2008. Here are the winning accounts for 2009. Did any survive?

All the published data out there is riddled with survivorship bias.

 

The trade is according to your rules or it is not? Doubt means your entry parameters are fuzzy. If in doubt, work on why.

 

You mean..."If in doubt, work it out". That's a good one!

 

if in doubt about your strategy / system stay out.

 

George Costanza?

I use to be often wrong and on the losing edge,

I am still often wrong but now always Hedged.

Use to take off half to make up lemons,

Hedging allows for more capital appreciations.

 

That's kind of like a limerick. (Minus "The boy from Nantucket", of course.)

 

Reminds me of Star Trek.

 

Also, what they are not telling us is how profitable the profitable accounts were.
I bet that only a small percentage are profitable enough to ensure their long term survival