Hello Laurenceputra, If that particular knowledge contributes to a clearer image about how the industry works, then yes, you (as a consultant) can use that kno

Hello Laurenceputra, If that particular knowledge contributes to a clearer image about how the industry works, then yes, you (as a consultant) can use that knowledge. If however that particular knowledge is classified, then you won't. If you were to divulge such classified information the client might ask himself what you would do with what is in your head once you leave the project...