Emergent time axis from statistic/gravity dualities

We discuss a very naive but natural idea that time emerges as the holographic dimension of gauge systems in euclidean space, which take statistic, e.g. Ising model as concrete implementations. By identifying the renormalization group flow of statistic models with the time flow of dual gravities, we get a universe whose evolution history is qualitatively the same as our real world. We comment highlights projected by this idea on the cosmological constant problem and develop preliminary evidences for the validity of this idea.