I participated in a thread that acrary appeared on, and he gave what I saw as a very good example of what he means by "edge." [related to inflow of funds to mutual funds] With that thread being specifically about automated systems (and not edges per se), things moved on. Here, I'll ask and hope to get some more replies. Can an edge, for instance, be as simple as trading off of a chart pattern like seeing a rising stock hesitate and come back to the 10dma line on shrinking volume followed by a resumption upward? [that's a simplistic way of stating it, since likely other "rules" may need to be implemented to aid profits] I don't know if one can classify what he's merely seeing on a chart display as an "edge." Thanks for any help.