The Harappan culture as a whole gives the picture of a changeless, stagnant society. But this can be disproved by the changes in which aspect?

Harappan culture has sometimes been characterized as an unchanging, stagnant society. However, this impression can be disproved by examining the stylistic and manufacturing changes seen specifically in Harappan pottery produced over the civilization’s history from 3300 BCE to 1300 BCE. Archaeologists have documented distinct differences between Early, Mature and Late phase ceramic types indicating the Harappans actively innovated, adopted new techniques and adapted to socio-economic shifts over the centuries.