Kant believed that Space and Time were synthetic a priori concepts that our mind imposes on experience. From this, he claimed that we can only know objects as they appeared to us, mainly as occuring in Space and Time. So, only phenomenon can be known, not the noumenon, or the thing-in-itself. My question is this: If Space, Time, and their product Causality, are concepts provided by the mind, and objects are independent of our existence (as Kant believed) then does this mean that reality is structured so the second it is perceived? Is the universe, then, chaotic the second we turn our backs to it? I basically wish to know if Kant addressed this consequence of his assertion--provided I have properly understood his assertion. I hope you can address my question for there is no one that I can ask in person, nor have I come across any mention of this problem from Kant's writings. Thank you in advance.