It seems to me that there are different levels of deceiption which on some cases we justify why we are doing something so it doesn't seem like deceiption. In reality I have learned through the bible that the levels don't matter its all deceiption. So, I believe that as humans we need to stop trying to justify what we do so we act like we are not sinning. I would rather just go to the bible if there is a question as to whether it is a sin or not. Most of the time I know if I think it could me IT IS so don't do it!!