Don't have Telegram yet? Try it now!
http://joone.net/2016/12/23/5-%ec%86%8c%ed%94%84%ed%8a%b8%ec%9b%a8%ec%96%b4-%ec%97%94%ec%a7%80%eb%8b%88%ec%96%b4/
5. 소프트웨어 공학의 시작