“Pragmatic Dave on Passion, Skill and ‘Having A Blast'”:http://www.infoq.com/interviews/dave-thomas-agile-passion:
bq. … you should be investigating your tools set and you should be trying different techniques and different ways of doing things. And maybe then, more and more it looks back into practices. And that’s not just to make you better at your job, it’s also to make you safer in your job. Because, at the speed things are changing, *in 10 years the job description for Java programmer is going to be “maintenance.”* And that’s just the case, just the way things work in this industry.
So, what are you waiting for? Get moving. Learn a new language. Today.