Here is one way to make difference between the INTj and ENTp type, when you are seing one of them in public. When faced with problem and you will have to speak INTJ probably would make sentences based on logical conclusions:'' We can't to this cause of the loss of enery,, so the solusion should be relaxing and using different techniques.'' ENTp would not make such sentences what are based judgmental attitudes instead ENTP would say weather or not something is possible or not with out explaining why by giving just prognosis:'' This can't be done and we should concider another aproach.''