First, do not flame me. I am merely stating what I heard in a conversation. There were a number of quants where I used to work. Some used technical analysis and others did not. One fellow in particular told me that he believes technical analysis does not genuinely provide the edge required to be consistently profitable. I'm not fully sure I agree with his statement, but I'm wondering if there are quants out there who have some more words on the matter. What exactly is a man with a PhD in mathematics saying when he believes technical analysis doesn't provide a significant edge to be consistently profitable? This isn't the first time I've heard someone say this, really. There was another fellow who used to post here regularly who claimed that people were delusional if they thought optimizing systems based on different moving averages was going to get them anywhere. And what is it, exactly, that quants provide that makes them so valuable to all of these quantitative hedge funds?