"But how do you know if a $5,000 radio designed in-house is going to work against the tried-and-true legacy parts? How do you build the entire rocket's avionics computer system for just over $10,000, when standard rocket companies use systems that cost in the neighborhood of $10 million?
Well, you test both of them on the same flight. While we've been watching SpaceX try to land a rocket on a boat, Vance notes that the company has been performing dozens of experiments in secret. It'll load a rocket with both the legacy part and the one it's designed in house, and test them both without making a big deal out of it."