Sure, but you must realize that you're effectively avoiding a perfectly valid challenge that, for your own sake, you should know how to address? Moreover, vague statements that "it's all in the charts" don't exactly offer convincing arguments in favor of the existence of some systematic methodology that works. However, this is neither here nor there...
Let me ask you a question instead. Why and how do you know that "it" - let's call it "edge" - is, in fact, in the charts?
What was the challenge? I missed it.
I think the concept of an "edge" as it is commonly referred to in forums such as this is nonsense frankly. I am not trading against anyone in any meaningful sense (nor is any of the retail punters on this forum) and how anyone can imagine forex markets, for example, to be zero sum is beyond me. So an "edge" is not something that concerns me in the slightest.
However, if you are asking why I think that all the information needed to trade profitably (which as I say is in my opinion nothing to do with an "edge") the first answer that springs to mind is the organic growth of my trading account.
If you want to delve deeper into my method it is outlined in a few posts, two of which have been made quite recently (I only have a few, so they're not hard to find). If you can't be bothered, I will say that it could loosely be described as fairly standard price action, the kind that was once so fashionable but seems to have become much maligned of late.
To give one specific example as to why I think it works, I like to pay attention to round numbers, especially big ones. Pull up a 15m YM for the last month or so, and plot every 100 pts, or EUR/GBP weekly or daily and plot every 500 pips. If you don't think these areas are significant, then there is probably too wide a gulf between our views to have a meaningful discussion.
To continue, I do regard such areas as significant and therefore look to trade when price reaches them, because price reacts to them. Why does price react? The only possible reason for price to do anything - orderflow.
I should clarify this is one tiny element of how I trade. How to actually profit from this is something else, but concentrating your trades on areas likely to provoke a reaction is a very easy way of beginning to see and gain some understanding of orderflow.