Theory is information for free
"Cognitive anthropologist Pascal Boyer once said that theory is information for free. Airbnb works a bit that way. A great theoretical framework explains the world the same way Airbnb makes a mountaintop cabin useful. With a great theoretical framework, you work with the pieces of information you’ve always had, but you see what you hadn’t seen before. When you list your mountaintop cabin on Airbnb, the property doesn’t change physically, but it suddenly becomes useful."
- Shanu Athiparambath, 
"It’s a succinct way of saying that if you have a theoretical framework you can deduce and extrapolate a lot about the world without having to know everything." - Razib Khan