I concur. We can never know what objective reality is or what it is like. We can only know that it exists. -The senses are imperfect. -The brain interprets data from the senses so that it becomes useful and discards data it doesn't need or can't process. -Person A cannot experience objective reality in exactly the same way as person B. -The subjective reality of person A is not exactly the same as the subjective reality of person B. -But the subjective reality of person A is similar to the subjective reality of person B. -In this way one can sketch a picture of what objective reality must be like. But we can never know if it's accurate or not. We can also conclude from this that person A build his subjective reality on the same objective reality as person B did. -Therefor objective reality exists and is 'how things really are' but is at the same time unknowable.