He was a crusty, retired New York City cop, now driving a cab. I was an IBM manager on my way to the airport. We struck up a conversation.

“An ex-cop?” I gushed. “I’ll betcha you’ve been in some real pickles. Surely you are packing heat right now.” He scowled at me the rear view mirror.

“Nope. I don’t pack heat,” he growled.

“Why not?”

“Because when you carry a gun,” he said, changing lanes, “You think with a gun. And when you don’t carry a gun, you gotta think with your head.”

And so it is with start-ups that take VC money. If they are not careful, they tend to solve problems by throwing money grenades at them, thinking with their money instead of being resourceful.

So take a lesson from a cop: “You gotta think with your head.”