The information we receive from the universe is in the form of millions and billions of pieces of sense-data. This is clearly too much data for us to process without confusion. So we filter out that which we do not require.
Thus the world "out there" that we experience is partly given, and partly constructed by our brain's filtering process.
So then, if I choose to ignore the colour red, for example, does that mean there will be no reds in my universe?