Consciousness is horrendously bad at multitasking. We must see each viewpoint sequentially. We also generally use the easiest tool for the job so playing with the kids does not require systems level thinking. Children don't have the ability to think in complexity so it would be inappropriate to talk to them at that level.

XP (extreme programming) requires two programmers to work together on a task. One focuses on the details or object level while the other programmer focuses on the system level. One writes code while the other provides insights on the constraints and environment.

When I say systems thinking is "higher" I just mean it comes later evolutionarily. Perhaps it is easier to accept that the MORE viewpoints one is capable of having, the BETTER for guaranteeing survivability, flexibility, and understanding. Ultimately knowing all viewpoints and holding no viewpoint is the most powerful and unbiased state to be in.

We grow through differentiation and integration. We advance from subjective to objective. We move from slavery to mastery. We expand in our circles of love to encompass more of the world. These are all just models to help point the way of personal evolution. The models are not the territory: leave too much out and they become useless, add too much and they cease to be models.

Here is a seminal work on personal evolution which in my opinion is one of the greatest contributions of the 20th century: http://www.clarewgraves.com/articles_content/1974_Futurist/1974_Futurist.html