There is a time of observation for each piece. It can be swiftly observed, interpreting a message that belongs to a transient nature. Also, it can be observed slowly, pausing on the details and creating a mood around the object or even within oneself.
If we quickly observe a visually-busy piece, at first glance, we will find certain information, and as we examine it more closely, we will realize the same piece has much more to communicate. Pieces with a lower visual load allow space for imagination. What we interpret as an empty space can acquire a new meaning since context doesn't matter as much as long as we are in the present. The more attention we pay, the more our mind will work. Therefore, a piece with a lower visual load could convey a similar, if not more, than an overloaded one.
This concept can be applied to any aspect of daily life. A shadow on the floor may have a specific shape for me and possibly a different shape for you. Sometimes we may coincide in our interpretation, and other times, as we look at it again & again, the shadow may surprisingly fade away. Is it possible to see something we don't know?
In one way or another, time can define the message of a piece. Its length doesn't matter; all results are valid.