7.The Reason of Trading: Comparative Advantage

       Just imagine that a family decided to go to the beach to enjoy their weekend. Father stopped at the gas station to put gas in the car and mother and son bought the mango, banana and volleyball. Most of these products are made in a foreign country other than the U.S. Why we buy so many different products from outside of the country even though we think we already have enough technology to produce these products? Because there is a economic and mathematical secrets called ‘ComparativeAdvantage.’

6. What is Big Data?

       So many people in the world use smart phones everyday and every hour in daily lives. With this technology, we can easily search information, buy something and share information with other people through the Internet. Some people say, people in present time are addicted to smart phone, but we obviously can access all kinds of data in the world through the small devices with simple clicks. People need data to live and desire to have more data than other people to live better lives.