Small systems are more flexible and malleable; therefore, experiments are easier. Some experiments would work well, others wouldn’t. Because they would keep things small and flexible, however, it would be easy to throw away the mistakes. This would enable the team to pivot, meaning they could change direction based on recent results. It is better to pivot early in the development process than to realize well into it that you’ve built something nobody likes.
Google calls this “launch early and often.” Launch as early as possible even if that means leaving out most of the features and launching to only a few select users. What you learn from the early launches informs the decisions later on and produces a better service in the end.