For Spinoza, whose ultimate goal was to discover how human beings can be happy, our goal should be to replace our “inadequate ideas” (partial, incorrect, emotionally loaded and distorted understandings) with “adequate ideas” (understandings which are accurate and take in the full causal complexity of the situation as much as possible). This complex understanding not only includes a grasp of all the relevant scientific facts but most importantly views all activities and events as unfolding relentlessly from the laws of Reality as the predetermined unfolding of the totality and logic of Gods being.
Spinoza argued that viewing things this way leads to two consequences. The first is peace. When we understand that things could not have been other than they are and are not the fault of either ourselves or our “enemies” or anyone else, we are freed from guilt, blame, anger, bitterness and a host of other draining and destructive emotions. What happens is coterminous with the realm of the possible- what happens is exactly what could possibly have happened. Reality is the possible. Or to put it more technically, the borders of reality are coterminous with the borders of the possible; what did not happen by definition could not have happened.
The second is that our shift moves from our emotional reactions toward understanding- if we want to change things, we need to increase the accuracy and complexity of our causal analysis, not merely rage against people, political parties, or anything else. Understanding the causality involved can empower us to effect real change when possible, as opposed to relegating us to a soap box or privately gnashing our teeth in the dark.
Source: Matthew Gindin, Spinoza Is Still Relevant – The Forward