Scarcity is when a resource or service becomes less available. The decreased availability means that demands exceeds supply, causing the price to increase.
A very good example of technology that increased productivity is the smartphone. It allows users to browse the internet, check time, communicate and keep notes, decreasing the need for many separate devices.
Rashad's father's question brings racism into play, as his comment infers that Rashad might have brought trouble upon himself based upon his appearance (sagging pants).
