Gopal S : 1. historical context is important for identifying SC/ST; 2. constitution and its approach to SC/STs ; 3. editorial mistake in KN Thomas of Their/ there by the SCC

Gopal S refers to the census report of 1891

Gopal S explain how the various "depressed classes" within rajputs and jatts were called tribes. This is how they are today called as SCs too

Gopal S refers to concept of primitive tribes mentioned in the census report of 1931 - the term shifted from depressed to Scheduled caste/ untouchables