Knowledge is always considered as the ladder to civilization and the key to social progress. However the lifespan of a person is normally limited thus he or she needs to choose between studying specifically like an expert or broadly as an inquirerall-round person. For someone like me who love adventure and fresh learning experience, to have a broad knowledge is always useful and pleasant.
Firstly, the economic benefits job opportunities prefer people with multiple skills. It begins from the interview of big companies where you were asked about how many skills you posses--not only practical skills like making ppts or excels, but also your experience in clubs or speaking and debating competitions. The practical skills indicates your effiency to finish the tasks assigned while the experiences unrelated with your major study showcases how you will balance your work and life--these are the qualities that companies care value since the majority employees are not recruited to make developing plans for the board but to finish the tasks assigned.
Secondly, globalization fastens the process of skills integration, and people with only single specific skills are unlikely to enter the management level of a company. To mange and motivate staff requires the HR to know both human psychology and business knowledge. To attract more customers asks the sales manager to study social behavior and brand promotion. Globalization provides people with more and more approaches to various knowledge, so if one wants to gain build trust from with others, it's better to gain a broad knowledge.
Thirdly, the change of different eras quickens and people should be an open minded learner to prepare for any possible unemployment. With the rapid development of technology, the first and second industry revolution replaced mass human labor in many places with machines while the third one enables IT industries as become the most promising ones in our modern worldsociety. Now the Artifical Intellegence are even advancing towards many wit required jobs like the go players or Siri. It's foreseeable that there will be more and more jobs be replaced by AI while human couldn't predict when and which. So it's wise to learn broaderly and it increases your opportunity to get a job since the experts are always the top 1% in their majors and it would be talent required and time and efforts consuming to be a real professor.
To become an expert is a time and efforts consuming task while the fast tempo of life makes it even more risky to only devote your life to certain study. To be better prepared and more guaranteed, please learn to be a multi-skilled talent.