Lawrence Maxwell Krauss is a Canadian-American theoretical physicist who is a professor of physics, and the author of several bestselling books, including The Physics of Star Trek and A Universe from Nothing. He is an advocate of scientific skepticism, science education, and the science of morality. Krauss is one of the few living physicists referred to by Scientific American as a "public intellectual", and he is the only physicist to have received awards from all three major U.S. physics societies: the American Physical Society, the American Association of Physics Teachers, and the American Institute of Physics.
Here is what would make a quantum computer so powerful.
I find it fascinating that based on what we now know, we can’t yet say that it’s impossible to travel in time.
These virtual particles are really particles that simply are created from empty space, particle anti-particle pairs that exist for a time-scale so short that you can’t observe them by any measurement, but they're there.
You want to make this macroscopic object, you want to keep it behaving quantum mechanically which means isolating it very carefully from, within itself, all the interactions and the outside world.
In cosmology we are at a similar place to where Darwin was in biology.