Since we are talking about edges may I also offer 2 other observations.
1. Markets change, so edges or characteristics come and go, the job of the trader is to keep finding them, the whole nothing works forever argument is true, but this should not stop you exploiting what works now.
2. It seems most people on forums are trying to develop systems on the most liquid markets, here everybody is trading EUR/USD or GBP/JPY (on other forums it's the ES or YM), the most liquid markets are the most efficient, as far as I can tell most of these markets have no discernable characteristics beyond a random walk. My point being is that it is going to be awfully hard finding technical inefficiencies in these markets.
1. Markets change, so edges or characteristics come and go, the job of the trader is to keep finding them, the whole nothing works forever argument is true, but this should not stop you exploiting what works now.
2. It seems most people on forums are trying to develop systems on the most liquid markets, here everybody is trading EUR/USD or GBP/JPY (on other forums it's the ES or YM), the most liquid markets are the most efficient, as far as I can tell most of these markets have no discernable characteristics beyond a random walk. My point being is that it is going to be awfully hard finding technical inefficiencies in these markets.
The breaking of a wave cannot explain the whole sea.