Real?

Ok so in class on Monday we had a really insightful deep conversation of what real or reality was. Is real physical, mental, psychological, or hypothetical. In my opinion reality is based on perspective. To tell you the truth I'm not really the artist type I'm more of the nerdy science type of guy so to me reality is all based on ones perspective. For example getting into the touchy subject of religion... To some God is real. Jesus is real. To those people God listens to their prayers at night. Guide them when they are lost and heals them when they are wounded. That is a reality to those people based on their believes and their perspective. Not based on physical but si souli their perspective. God is real and that's that. To others there is no God. Some believe that the blue sky full of clouds is just that a sky full of clouds and nothing more. To them God is not there, he is not real, and that is their reality based on their perspective, based on the way THEY look at it. So now getting into the science aspect of reality. Like perspective each perspective changes relative to where one stands. For example if I'm at a train station sitting on a bench, and see a train pass me at 45 miiles per hour. In that train I see a person throwing a ball at 15 miles per hour. Relative to where I stand my reality is that the ball is traveling at 60 miles per hour, because we add the speed of the train and the speed at Which the person threw it. Now relative to the person that threw the ball the ball is only moving at a speed of 15 miles per hour. He doesn't see himself traveling at 45 miles per hour so he could only measure that the ball is going 15. So who's right ? Me or the train passenger? We both are. That is why reality in my opinion changes on the person's perspective. This comes from einstines theory of relativity. According to him the reality of everything can be changed relative to ones perspective. Time, mass, lengths, measurments are all based on perspective. The only thing that cannot change is light and the speed of light. I would explain but it's too long. Ok that's my insight feel free to ask Q's.