A basic problem faced by most economies at early stages of their development is how best to raise the investible surplus for rapid accumulation: to what extend should the burden be placed on those in the agricultural sector (by lowering the price of their output relative to the industrial...

Modern smartphones come with high computing power, a variety of sensors and customization abilities that allow creation of a range of practical applications (apps). These features, coupled with the mobility and accessibility in terms of cost that smartphones offer, make them a potential...