𝕊𝕚𝕣 𝕎𝕚𝕝𝕝𝕚𝕒𝕞: 𝕋𝕙𝕖 ℙ𝕖𝕣𝕤𝕚𝕒𝕟, 𝕆𝕣𝕚𝕖𝕟𝕥𝕒𝕝𝕚𝕤𝕥, 𝕒𝕟𝕕 𝕃𝕚𝕟𝕘𝕦𝕚𝕤𝕥 𝕁𝕠𝕟𝕖𝕤 By Seven Rivers  A discovery announced 237 years back this week was the key that unlocked the connected ancient history of Indians, Persians,  Europeans, and others who constitute 46% of humanity. The discovery led to a long, ongoing quest that has involved linguists, mythologists, anthropologists, archeologists, and — of late — geneticists. The man behind that discovery was an Anglo-Welsh polymath, Sir William Jones, a judge in British India and the founder of the Asiatic Society of Bengal. Sir William said at a meeting of that society on Feb 2, 1786: "The Sanscrit language, whatever be its antiquity, is of a wonderful structure; more perfect than the Greek, more copious than the Latin, and more exquisitely refined than either, yet bearing to both of them a stronger affinity, both in the roots of verbs and the forms of grammar, than could possibly have been produced by acc