Caliphate can not be said as myth. It is very much possible but needs a high level of maturity and unity among people. And also requires a high degree of education islamic and scientific. We can easily say that we are way backwards than our pious ancestors. But what we really need is to at least start following the road. Islamic political system implemented with sincerity and honesty will suffice in present. In future, it possible that once we are on that road and our minds mature, we may evolve into muslims that can implement caliphate system.