All that is possible... I remember computers in the 80s that could do that..
But the problem is not the computer or the software... it is the external
electronics that must be installed in the house that is the problem.. for
example if you want it to open or lock the door you need either a motor to
turn something to lock it, or an electromagnet to move something.
Flying cars already exist, but if they have vista installed onboard they
will crash. Literally.
http://travel.howstuffworks.com/flying-car.htm
These are crude machines though that still use air to lift. Antigravity is a
technology that exists, however it will take a long time until it will get
into mainstream applications. Also teleportation has been proven as a
reality, first with particles and now with atoms. I would not be surprised
to see teleportation of large objects in 50 years.
As for your use of a crystal ball to see the future, its a really outdated
way. You don't need that. Anyone can see glimpses of the future using only
his brain,
if trained to do it. Time and space are only an illusion, it is an illusion
of 3 dimension plus one of time that has expanded.
In fact there is no space or no time and everything you know as matter, and
everything that has happened in the past or will happen in the future is
really
unified in higher dimensions.
My brain does not heat up, in fact human brains are the most efficient
calculating machines known to man.. the total *possible combination* of the
neuron dendrites is far-far greater than all the atoms in all the known
universe. A brain packs the most computing power,
in a small space and works on very little energy only a few watts.
That is.. IF your brain works....