mobilism
/ˈməʊbɪlɪz(ə)m/noun
1A belief in or tendency towards change. In Philosophy : the view that nothing is fixed.
2 Geology. The hypothesis that the physical character of the earth's crust is such as to sustain great lateral movements, whereby the configurations of continents and ocean basins are changed with time. Compare stabilism. Now chiefly historical.
Origin
Early 20th century; earliest use found in The Philosophical Review. From French mobilisme from mobile + -isme.