> The whole divide-and-conquer aspect of breaking modules into smaller parts requires not exposing unnecessary details as interfaces. ECS takes a fundamentally

> The whole divide-and-conquer aspect of breaking modules into smaller parts requires not exposing unnecessary details as interfaces. ECS takes a fundamentally different approach. OOP is about breaking things down, ECS is about building things up. Like in ECS, it's possible to dynamically toggle whether an entity has a particular field or not.