What is reality?

What is reality? What can it be? Can it be at all?

Sometimes it seems to me that every one of us lives in an isolated within his mind world composed of hallucinations - complex and integrated ones, that involve all the senses, feelings and emotions it is possible to experience (sight, hearing, taste, smell, touch, thermoception, nociception, equilibrioception, proprioception). And, by some grandeous force, in some curious way, those isolated worlds of illusions are synchronized and coordinated with each other. You can call this "objective reality", which by itself has nothing to do with what we observe. I can tell you, this supposition is in no way worse than that which tells: "reality is material, mind derives from matter in its complicated form and reflects the outer world". Science is not going to oppose what I've written above. Science has nothing to tell about that. Science doesn't have to tell about that. Science doesn't deal with that, and so does it right. In defiance of people's prejudices, the purpose of science is not seeking the truth, despite what some philosophically uneducated scientists say. Science develops an integral, descriptive and predicting model of the aggregate of phenomenas observed. We can prove nothing about what stands behind the phenomenas. We cannot prove even whether something behind the phenomenas exists.