Natural learning is getting out of the way and letting kids self-organize and learn without intervention.
It should happen every day, multiple times a day if possible. It is the simplest way to allow for differentiation because it happens naturally. Children will call on their strengths when in flexible learning situations to put their best self forward.
The key is to develop frameworks and educational products that don't get in the way of natural learning and development. To do that, the creators of these products have to be able to see what natural learning looks like and create products that support the natural order of things.