>The primary motivation for Europeans to import knowledge from India wasn't mere academic curiosity - it was a matter of practical necessity, particularly in na

>The primary motivation for Europeans to import knowledge from India wasn't mere academic curiosity - it was a matter of practical necessity, particularly in navigation. If the Europeans needed help from Indians "particularly in navigation", then why did the Indians never navigate to Europe before Europeans navigated to India? Also, in your opinion, did the Europeans continue to copy math from India after they copied calculus or did European civilization suddenly start discovering most of the world's important new math and physics (including refinements of calculus and most of the math and physics that requires calculus) while Indian civilization suddenly slowed way down in the rate at which it discovered important new math?