If we are just mechanisms, then we have no way to determine if any truth gets recognized as such just because some mechanisms of our brain produce this result in us. All the same applies to the concepts of awareness and freedom. In our subjectivity we feel knowledge and awareness, besides based on the objective existence of beings, also as connected to intentionality, a possibility of us to decide if, when and how to think of them. If freedom of these decisions does not exist, then we instinctively perceive that awareness does not exist, we as subjects do not exist, we are just objects, which means machines. The same way, we are ultimately unable to explain the concepts of cause and effect because actually they are structures of our subjectivity. As a result of all of this, the very concept of determinism is just another structure of our subjective experiences, because it depends on our concepts of cause and effect, which are subjective.
This takes us to the beginning of this reflection, where we were hypothesizing that we were just machines. Now we see that even this hypothesis is based on a subjective concept, because being machines is just another way of expressing determinism. As a final result, any discussion about freedom, determinism, cause and effect, awareness truth and knowledge should be done considering that they are all subjective feelings, emotions, naive concepts, that have no way to be hypothesized in any objectively structured way. Questioning about the existence of freedom doesn’t make any sense, because such questioning is based on the wrong assumption that freedom can be imagined as an objective structure, a kind of metaphysics. In conclusion, questioning about the existence of freedom is just another naive attempt to build some metaphysics. The same applies to the other concepts that we have mentioned.