Nandan Nilekani, the visionary co-founder of outsourcing pioneer Infosys, explains four brands of ideas that will determine whether India can continue its recent breakneck progress.

Nandan Nilekani is the author of “Imagining India,” a radical re-thinking of one of the world’s great economies. The co-founder of Infosys, he helped move India into the age of IT. Full bio and more links