I think anything that gets in the way of our own lives, by our own standards/measures is a "problem" for us :-)

The world can't change how it is, one learns to add and subtract before learning multiplication and division not because schools/teachers like to see us suffer but because it just kind of works that way.

It's not the thinking that is linear, it's the process itself; seeds sprout and grow "up" toward the light/sun. People do that also. If one is growing toward the light, getting distracted and going after rain or nutrients at the wrong time can cause problems. The phrase "everything in its season" comes to mind. Yes it's hot in summer but sudden snow is not the answer? Think of flowering trees budding in the Spring and a sudden frost that kills them so they don't fruit. No orange juice from Florida that year! LOL

It's fine to have a brain that has ADD. That's part of what helps make one the person they are. That's what one gets to struggle with, a "card" one has been dealt. Some people are born to rich families, some poor, some are orphaned or adopted or physically handicapped or have very flawed parents who don't nurture their child very well so the plant grows sickly. It doesn't matter what the condition one is that one struggles with, Living is the actual struggle itself, the recognizing of the condition(s) and working to be the best one can be in spite of those conditions. What happens "to" us is outside our control; we don't pick parents or conditions we grow up in but we do get to work with ourselves and how we respond to those conditions. We can figure out ways to tell others, "Hey, you're blocking my sun!" or, "Could I have a little of that water over here please?"