For many years I used to wonder why is only the visible spectrum in the electromagnetic spectrum actually visible to us and why aren't we able to see infrared or microwaves. Why is our consciousness tuned to only a small window of the wider phenomenon, be it light or sound.

High-school physics empowered me to delve deeper into this topic and eventually, I arrived at a hypothesis that might answer this question. It has to do with our very own star, the sun. Sun emits electromagnetic radiation and the most of it is of the wavelength of color green. So the solar spectrum is centered around the color green which happens to be the middle color in the visible spectrum (VIBGYOR). The solar spectrum's overlap with the visible spectrum cannot be just a coincidence. It appears that the life forms on the earth have evolved over several million years to be tuned to the window of wavelengths frequently encountered by them. Maybe if our star had emitted microwaves, life forms would have evolved differently and such life forms would have microwaves in their visible spectrum. The same applies to sound. Our ears are tuned to perceive the sounds that are most commonly encountered by them rather than less frequent sounds. Why doesn't nature and evolution allow us perceive the entire spectrum? Maybe the design would be far less efficient and that would be wasteful of the available resources.

With these thoughts, I feel that our consciousness wants to be tuned to our surroundings. Also what causes evolution to evolve the life-forms such that they are in-sync with our surroundings? I used to tell my friend that consciousness has a role here, but he used to argue that evolution does everything randomly and the fittest survive. Ultimately, the relationship between consciousness and evolution remains a mystery waiting to be unraveled with scientific reasoning.