The history of the universe is, in effect, a huge and ongoing quantum computation. The universe is a quantum computer.

Science consists exactly of those forms of knowledge that can be verified and duplicated by anybody.

Nothing in life is certain except death, taxes and the second law of thermodynamics. All three are processes in which useful or accessible forms of some quantity, such as energy or money, are transformed into useless, inaccessible forms of the same quantity. That is not to say that these three processes don't have fringe benefits: taxes pay for roads and schools; the second law of thermodynamics drives cars, computers and metabolism; and death, at the very least, opens up tenured faculty positions.

When it comes to their capacity to screw things up, computers are becoming more human every day.

There are considerable advantages to using many degrees of freedom to store information, stability and controllability being perhaps the most important.

Indeed, as the above calculation indicates, to take full advantage of the memory space available, the ultimate laptop must turn all its matter into energy.

Of course, not everybody's willing to go out and do the experiments, but for the people who are willing to go out and do that, - if the experiments don't work, then it means it's not science.