Forgetting, Remembering, Knowing

Forgetting, remembering, knowing. In Egypt they forgot, the Egyptians did not know. He reminded them and had them know. I often struggle with an ideal I have in mind. It is like I know yet I cannot do. Perhaps the truth is that I do not know at all. I think I know but true knowing changes one's doing. If I know that the chair I am looking at will support my weight then I will sit on it. This is not a knowing of the specific chair at that specific time. It is not an absolute knowing because for all my knowing and the following sitting, the chair may still break. Thus it would seem there is a tipping point in my knowing, where I know enough to perform the action.
This was what He seemed to be taking the people through in Exodus. A process of knowing enough. There was frustration on His part when He thought the people knew enough but they did not act on it as He would have expected. How much is enough seems to be the question. Perspectives held by the people and Him could be the difference in their ideas of enough. Could it be that He failed to see from their perspective as much as they failed to see from His?