To have a 1000 year future we will have to make a collective decision to continue creating a linear-time universe after we see how illusory it is. Let' s say we do because we love this material world and enjoy playing out new creative possibilities within it. The brain will be understood as a self-created instrument for interfacing between cosmic consciousness and material reality. I doubt that science as we now know it will continue to be a self-contained branch of human endeavor a thousand years from now, since everyone will have direct mental access to knowledge as desired and most research of the present kind will thus be obsolete. Technology will also be inconceivably different.
Science fiction is wide open to imagination so is our scientific future.
Humanity understands itself as spirit having human experience and is having a wonderful time on this beautifully restored and abundant planet, as well as on others we share. We know ourselves as conscious creators of our realities and have long since solved ancient social and environmental problems stemming from ignorance of cosmic process. Our focus is on helping each other, as well as beings of other worlds in continuing spiritual evolution.