I thought the content of you comment was interesting (and sounds like interviewing with you might be pretty cool), but the tone was really harsh and unlikely to

I thought the content of you comment was interesting (and sounds like interviewing with you might be pretty cool), but the tone was really harsh and unlikely to spark any interesting conversation. Something like this might have worked a bit better: "It's not the language that matters when looking for a job, it's important that you convince me you know what you're talking about. Show me something I didn't know, then convince me it's worth knowing. Demonstrate you know big 'O' notation (and maybe even tell me how little 'o' and \omega are different). Draw me a binary search tree. Show me how a skip list works. Fill in a multithreaded producer / consumer skeleton and get it correct, then make it fast. Explain how UTF-8 works from first principles (i.e. what's wrong with ASCII? How would you fix it? Now how do you optimise the answer?) Python and Ruby are both trendy right now, and interesting in their own right, but we don't write anything in either language and likely never will. The underlying technical/CS understanding is not only more important, but common to almost all problems."