That two state solution is a theoretical approach without ANY sort of practical suggestion. A plan or a map? Zero.
Generations of international experts including my poor self have no clue how such a model could look like as the history and geography of the region makes it absolutely impossible to make both sides happy or maybe satisfied (the extremist parts on either side included, otherwise the borders will never be safe - and safety will be key to peace).
What I want to say is, we have to get very precise what we want, in detail. Before I don't get presented a " 2 state solution" I even refuse to be in favour of that. It's NOT a guarantee for peace, not at all.
The people involved are still the same, the tight area too as well as the neighbors, the history, the religion and the various interests of third parties around the world.
As I said before, I'm afraid we need the courage to think in a new and very open way to find a solution. We must stop looking back, make a cut now and care for the future.
Or we will go on in circles forever - and that's what will most probably happen.