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.

Some folks think life and technology and mind can keep expanding forever. Others say it can't. We are still not clear on that.

In order to figure out how to make atoms compute, you have to learn how to speak their language and to understand how they process information under normal circumstances.

[With quantum computers] you can calculate how many bits are in the universe, how much energy it takes to flip them, how much energy exists, and use that to rule out lots of things about the universe's history. Anything that takes more bit flips couldn't have happened.

I have not proved that the universe is, in fact, a digital computer and that it's capable of performing universal computation, but it's plausible that it is.

Nothing in life is certain except death, taxes, and the second law of thermodynamics.

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