Programmer 
Content
Yes, I have experience with the languages and have successfully designed and developed many systems in new and challenging domains. Impressive. You are an excellent candidate and we would like to offer you the job. Why thank you. However you are inadequate. You have never used this open source library with a well documented API. You are not fit for my organisation. You will cost me time, money and my pride… Thank you for coming, Mr. Bond. Good luck with the job search.