Which is better, what you know or who you know?

We all heard it, it is not what you know it is who you know. That may have play in some spheres of activities and jobs such as NASCAR, pro sports, politics, Hollywood, etc, where name dropping or having the right family name or inside connections can open doors for you. There are times when it don’t matter if you have a pedigree name or have connections, you have to know what you know to get the job done, like a brain surgeon, or a physicist etc. Over all which is it better to have, super superior skills, or names to drop or connections you can make?