Nobody.
Nobody can solve poverty in India.
Nobody knows whether the netbook business is viable.
Nobody can fix the financial system.
Nobody knows how to bring freshwater to the sub-Saharian poor.
Nobody has figured out how to stop AIDS.
Nobody can stop the genocide in Darfur.
Nobody knows how to solve theĀ Hodge conjecture.
Nobody understands how to produce energy sustainably.
Nobody knows how to make health care affordable universally.
Nobody knows how to end the Iraq War.
Nobody but you, that is.