“Learning strokes isn't the same thing as learning to swim. If you can do strokes but only in shallow water, you're not safe in deep water. Knowing how to swim must include comfort and safety in deep water.

If you've learned to swim, you're comfortable in deep water. You may or may not know formal strokes.

Yes, strokes are swimming but knowing strokes is not "knowing how to swim." Yes, it's confusing. No, it shouldn't be this way. And this is why so many adults can't swim.”