This is an example of the "agency" of humans against the state. Agency is an important concept in anthropological studies. Agency refers to the capacity of individuals to act independently and to make their own free choices. This is generally discussed in opposition to the concept of "structure." It is often a matter of debate how the forces of agency vs. structure operate in various social situations.
The lifestyle of the tribal people in India varies from state to state or region to region
Every Indian tribe has a unique culture comprising of many different things.
Because scientists want proof and facts. Also the very thought that we are on floating plates is a strange thought, in fact the original idea was mocked.