Then show me the easily available "information on the langauge tree" to solve the unsolved problems in science. Btw. books are not mere information, they are also products of effort and sacrifice and intentions. They are also embedded in an economic system of paper, books, ink, transport and what not producers.

So you are either poor or too lazy to buy a book from the store. But this doesn't justify mind theft or it's distribution.

My comment was sarcastic.