What is a Window?

I am wondering what a window is.

The dictionary says that it is “an opening especially in the wall of a building for admission of light and air that is usually closed by casements or sashes containing transparent material (as glass) and capable of being opened and shut”.

So… we have two environments separated by a transparent object.

It seems to me that one environment is the Receiver and the other one the Giver. What is received and at the same time given? Light and air according to the definition.

And who observes these? We need to have an Observer also, for the window to make sense.

Someone observes how the Giver is giving to the Receiver.

If I am behind the window, I am at the same time the observer and the receiver; or the observer and the giver.

But…. a question comes in my mind now: What if I am only an Observer and I don’t give or receive anything? Can I do this being behind the window, on the one side or the other?

Or… is it the condition of being somewhere else in time and space?

Can I objectively observe this material entrance, this window-door between two sides?

And what if these two sides are not connected through space, but only through time? Can I objectively observe the entrance between two moments in time?

Can this gate be opened and shut like the definition is saying?

~ M.C. Simon