It might end up being the kind of thing where if you want to accurately model consciousness, you would need a computer the size of the universe, and it's gotta run for like 13.8 billion years or so, but that's just my own pure speculation - I don't think anybody even has a clue on where to start tackling this problem.
This is not to discourage progress in the field. I'm personally very curious to see where all this will lead. However, if I had to place a bet, it wouldn't be on GI coming any time soon.