Working smart is getting someone or something else to do your work for you. That's one definition, and in the case of VCs, it's how they work.
VCs don't invest in a company. They invest in a functioning system. They invest in individuals whom they trust to build and maintain a functioning system. The nature of the system is largely irrelevant to them, as long as it produces what they desire: money, prestige among peers, hope, relief from boredom, etc.
Understanding a system is essential to working smart, but even more essential is having the balls to exploit and manipulate the system - to add value to them system and to remove waste and inefficiency from the system. Functioning systems are often highly inert; they resist change. That's why I say you need balls to change it.
Your father sits in a cab all day driving people from point to point. He functions in a transportation system. But what did he do to exploit it? Maybe he didn't have the balls to exploit a system he understood. However, you can bet he hopes that, one day, you will.