What is the most important skill that a person should learn in the 21st century?

    In this highly developed era, people are getting used to modern technology. Browsing over the street, we could easily find that almost nine out of ten of the passersby are utilizing the so-called technological products such as Smartphones and Ipads. Although it is quite convenient to communicate with others through those products, merely a click then all is done, there is an important issue arising from which and that is the lack of face-to face contact. In the early days, without so many new devices that were invented to communicate with others, people kept in touch with each other frequently due to the inconvenience. They cared about neighbors and gave out a hand when somebody was in difficulty. Communities based on love and sincerity could be seen everywhere in the old times.
    Compared to the twenty-first century, it seems that something has been changed. As time goes by, people are getting more indifferent and care only about themselves, barely have time to "spare" some for those in need. That's why the society and even the whole world are still in chaos, owing to the fact that modern human beings' gradual indifference to the surroundings. People lack the ability to make a well-acquaintance to other people sincerely. Therefore, people should learn the skill to contact face-to-face, in order to get a better understanding of him and thus establish a solid and faithful relationship from which, rather than sliding on the screen of Ipad or whatever, eliminating the real significant meaning that lies behind face-to-face communication.