"Think about how each Lego goes together, Pup," Alex said. "If you pay attention how each piece can be placed to support each other while picturing what you want to build in your mind, you can make your Lego creations very difficult to break."
"Like this one daddy?" Callen asked. He held up a tightly built spaceship.
"Exactly," Alex said. "Like that. The one you're building right needs to be more like that one."
"OK, daddy," Callen said.
"Remember how I always tell you to think about how they go together to form a whole," Alex said. "A creation is only as strong as its weakest link."