This might sound kind of crazy, but this is something I've thought about for a while.
I wondered what reality was, and I decided whatever you believed became your reality, because reality is just how one perceives the world. Believing that, however, makes reality be very transient, and perhaps reality should be something stable and unchanging? And I believe that you experience motions because you decide to have them. If I'm happy it's because I decided to be happy. If I'm sad, it's because I've decided to be sad, and outside influences can't decide that for me, but maybe they can make me lean towards deciding one way or the other.
An example is how you did something as a child.. went somewhere, played a game. then you did it later in life, and had a totally different experience. Maybe the play basketball hoop in the playground was 100 feet high when you were seven years old, but then when you're twenty, it seems three feet tall. One way of interpreting the basketball hoop would be to say.. according to a tape measure, it is three feet tall. That seems factual and correct, but, is it really? For a seven year old, couldn't it be one hundred feet tall? Facts and evidence can provide one idea of reality, but everyone has their own individual interpretations and beliefs which contradict facts, and facts themselves are only arbitrary perceptions forced upon the masses. Is there any stable point of reference or is reality completely subjective?
I can't find a stationary point of reference, which led me to my conclusion that everyone has their own reality.
(I hope I made sense ._.)


