Light and shadow

Because there is a light, there is a shadow. This is the theorem of physics.

But this is only the world that our human's eyes can see. Some other animals may not see the shadow, or the other can see more things.

Also "seeing something" is just a chemical phenomena. Through the object "eye", the light, just defined by human, and the eye exchange the stimulus to the electric signal, it transferred to the brain and recognized as the light.

There are so many assumptions, the eye exchange mechanism, brain recognition system, etc.

There is a probability that something entirely different things are there, but some external stimuli comes into ourselves and the signal turns to be the "real" feelings.

Maybe, the philosophy is kind of these thoughts.

I think, human recognition, and brain science is placed very close to philosophy, even one is assumed science, and the other is non-science.

Can you say you ARE here for 100% probability?

Cogito ergo sum, very famous quote. But this can be just your imagination.