ABSTRACT
For example, in geology, the historical reason for the existence of great mountain chains has received two contrasting explanations. The first theory suggested that the earth is gradually cooling down. As it cools, the planet shrinks and like an apple that dries and shrivels or a balloon that deflates and wrinkles, its surface begins to crumple and fold and this we see as mountains. The other theory takes a directly opposite view. The earth’s core and mantle actually generate heat through radioactive decay. This heat wells up towards the surface, and like porridge in a pan, it crumples, fractures and disturbs the crust. As pieces or ‘plates’ of crust glide over the surface, some collide and are pushed into huge mountainous blocks. Each theory of mountain building understands the same geological condition in a fundamentally different way. The accounts are mutually exclusive.
