I was interviewing a guy for IT position 6 years ago. After one of the questions, he went silent for a long period of time. It has not happened to me before. I

I was interviewing a guy for IT position 6 years ago. After one of the questions, he went silent for a long period of time. It has not happened to me before. I did not think for a moment about interrupting him, it was obvious he is thinking how to approach the problem or his answer. Interviewing people requires patience, cut down on caffeine before an interview