things are transient and even a piece of solid rock can break into pieces. Indeed,Albert Einstein contended that we saw as solid consisted of particles without a solid state but just energy with neutron, proton and electron inconstant moving and hence changing.the himalaya mountain we saw a minute ago would not be the same mountain again because all the components of the mountain have already changed.but in reality and what is taken as a fact of life is a mountain is a mountain, changed or not,and will remain a mountain for a long time until one day,