The best way to spot this is to look at combination with positivist-negativist:Originally Posted by FDG
ENTp: taciturn-positivist-process
ESTp: narrator-negativist-result
So what it means is that EPs should be inclined to adopting a "critic" stance (different from INTps', though) in terms of your objectives, goals, or opinions - "what you want to do is wrong because you don't know this and that"; "you will get nowhere if you continue as you are now"; OR adopt a "how do I do this right now?" stance when trying to accomplish something specific.
Both the ENTp and the ESTp can shift back and forth between these stances; although each point should be most clearly visible in the corresponding type.