回複：最近一直覺得空蕩蕩的

Your post makes me feel that I am really stupid. Why do I always feel like there are lot to learn, and I never really truly master any of the languages.

I worked in IT field for 10 years, changed jobs 8 times, almost once every year. And every time, I had to learn new things. I worked as business analyst, application developer, report developer, tester, database developer, DBA, system administrator, project manager...... I really want to settle down to focus only one or two things just like you. I never had a chance to be bored, maybe you should change your job more often like me?