About me: I am software engineer with more than 10 years of experience. - Recruiter reached via linkedin and asked if I am interested then later we scheduled a tech phone interview - The interviewer started with a problem that he could not explain also he kept talking and not letting me think through the problem to understand it in first place. Then he mentioned that it's really hard to explain since we are doing this through a web call and he can not use a whiteboard to make it easy to understand. It is very frustrating and not fair to put someone with 0 emotional intelligence to interview people and struggle to explain a concept or an idea. Then before we ended that call he said that the problem he asked was called the Skyline Problem :) so he was baring the lead through one hour interview so I don't figure out this problem. When you see that you struggle to explain why not saying "Hey have you heard of the skyline problem?" and maybe the interviewee will understand your point.