The Objectivity Assumption

Figure 1. Rene Descartes quote on Naive Realism

We often assume that our perceptions are accurate and objective reflections of reality, but they are actually mental constructs shaped by our minds. Human perception is an abstraction, not a replication, of the world around us.

Our brains construct an internal representation of external events by analyzing various features. For example, colour perception is not a direct reflection of reality; colours are synthesized by our brain to differentiate light wavelengths. This means colour is an illusion, and it's impossible to ascertain that other animals perceive it as we do.

This assumption of objectivity persists because our brain's model of the world feels real, aiding our survival. Acknowledging the subjectivity of our perceptions can be uncomfortable and challenge our beliefs, leading to cognitive dissonance. Societal norms further reinforce this belief in objectivity, rewarding confidence and discouraging questioning.

However, recognizing our biases is essential. While our perceptions are subjective, this doesn’t mean all perceptions are equally valid or that objective truth doesn’t exist. It simply means we must actively challenge our cognitive biases to approach a more accurate understanding of the world.