It's a big problem. We sometimes spend half the interview trying to figure out what the startup is doing. A lot of people are bad at explaining this type of t

It's a big problem. We sometimes spend half the interview trying to figure out what the startup is doing. A lot of people are bad at explaining this type of thing. In fact I'd say most are. The solution is to practice beforehand, preferably on people who will tell you candidly when you haven't yet explained yourself clearly. The test of how well you've explained a startup idea is how accurately the listener could reproduce it from your description.