Here is Bill Gates:
Usually, “optimism” and “realism” are used to describe two different outlooks on life. But I believe that a realistic appraisal of the human condition compels an optimistic worldview. I am particularly optimistic about the potential for technological innovation to improve the lives of the poorest people in the world. That is why I do the work that I do.
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Consider the example of M-Pesa, Kenya’s mobile-banking service that allows people to send money via their cellphones. M-Pesa first needed to invest in many brick-and-mortar stores where subscribers could convert the cash they earn into digital money (and back into cash). This real-world infrastructure will be necessary until economies become completely cashless, which will take decades....MORE
Everything I know about M-Pesa I learned last summer:
