cosmic history.

Its serious matters if starwars 'history' got into school curriculum or national science conference https://www.ndtv.com/india-news/cars-and-planes-in-ancient-india-textbook-controversy-702895

(right click to new window:) https://www.firstpost.com/living/talk-of-40-engine-planes-ancient-surgery-overshadows-indian-science-congress-sparks-outrage-2029661.html

Even a more sanitised version of hindu caste system(petitioned by hindutwadis in US) presented in  US textbook belongs to a different (PR)category