The hard problem of consciousness is stated as- 'why objective, mechanical processing can give rise to subjective experiences.'
The reason I ask this question is that if we do not even know what a possible solution to this problem should look like, then perhaps this is an unsolvable problem.
So, my question is, what would a possible solution look like? What issues should it address so as to qualify as a solution?
For example, if I have a problem to produce a theory that explains the behavior of a physical system, then a possible theory should constitute a way to mathematically represent the state of the physical system and a law as to how this state evolves over time, etc. This can be formalized using differential equations, etc.
What would an analogue theory to solve the Hard problem of consciousness look like?