I think the ratio should be 60% interpersonal and 40% technical. The reason being is that technical is taught in school. Students are trained how to solve problems and how to do research for their project. However, when it comes to presenting, some students freeze. Interpersonal as most said cannot be taught, there are mental block which the student must over come. To get a job, people must have 60:40 ratio because they must be able to interact with other, create connections, if there is a product involve they should be able draw customers by having strong communication skills. I am not saying technical is not important, everyone should be an expert in the area they applied for but in order to climb the ranks they must able to show off their skills.