> you have to let go of the idea that you first acquire skills and basic knowledge and then solve problems. The order reverses.
^ this
^ this
As kids, we know what 4 is before addition is even mentioned. And we can count those 2 marbles and those 2 marbles and then those 4 marbles before learning the "+" sign.
If you think about it, we must know what 2 and 4 mean before we can learn what + means.