"Too often we enjoy the comfort of opinion without the discomfort of thought."
~ John F. Kennedy ~
When my children (twins) were little I bought them mini-tricycles with handles so I could push them both at the same time and all they had to do was keep their feet on the pedals and steer: obvious and simple... except that they didn't know how to steer. At age two, they had no experience with it or reference to it. And still, it made me mad when I shouted, "Steer!" and they didn't know.
How often in life do we expect others to know what we think they should know and feel frustrated when they don't?
I make no assumptions.