Show them the reduction to absurd of square root two. Tell them that one day their culture will eventually come to an end and but will be forever remembered lik

Show them the reduction to absurd of square root two. Tell them that one day their culture will eventually come to an end and but will be forever remembered like Homer’s Odysee, however large parts of it will be lost, therefore they should keep some of their best written manuscripts hidden on some caves which I will visit when I am back, to the future, lol. Also I don’t like to change the past, but someone should pass a note there saying that aside of Persia eventually the Arabian peninsula will create an even greater enemy.