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ABOUT 13.5 BILLION YEARS AGO, MATTER, energy, time and space came into being in what is known as the Big Bang. The story of these fundamental features of our universe is called physics. About 300,000 years after their appearance, matter and energy started to coalesce into complex structures, called atoms, which then…
The ancient origins of stars, planets and life may be viewed as a sequence of emergent events, each of which added to the chemical complexity of the cosmos. Stars, which formed from the primordial hydrogen of the Big Bang, underwent nucleosynthesis to produce all the elements of the Periodic Table. Those elements were…
“Because it helps you participate in everyday conversations!” is a weak but at least meaningful answer to the “What is accomplished” question. But when you quit playing the current events game, and observe others talking about them, you might notice that almost nobody really knows what they’re talking about. There is…
One potential concern with cross-sectional data is that it may be subject to cohort effects. Our findings in Experiment 2 are consistent with the possibility that people born in 1945 have unusually large vocabularies, people born in 1980 have unusually good working memory, and people born in 1990 have unusually fast…
Physicists love to think about systems that take only a little information to describe. So when they get a system that takes a lot of information to describe, they use a trick called 'statistical mechanics', where you try to ignore most of this information and focus on a few especially important variables. For…
21. What a living world will demand There is no end To what a living world Will demand of you. ∞ = Δ 22. Earthlife We are Earthseed. We are flesh—self aware, questing, problem-solving flesh. We are that aspect of Earthlife best able to shape God knowingly. We are Earthlife maturing, Earthlife preparing to fall away…
We can measure the influence of this thing we call dark energy, which is forcing an acceleration of the expanding universe. We don't know what that is, we don't know anything about it, other than what it's doing to the universe. Then 85 percent of the gravity of the universe has a point of origin about which we know…
When my husband died, because he was so famous and known for not being a believer, many people would come up to me-it still sometimes happens-and ask me if Carl changed at the end and converted to a belief in an afterlife. They also frequently ask me if I think I will see him again. Carl faced his death with…
On a time-scale of a thousand years, neither politics nor technology is predictable. China and Japan are the only major political units that have lasted that long. A thousand years ago, Europe was an unimportant peninsula lying on the edge of the more advanced and civilized Arab world. The technologies of today would…
Now particle physics in the United States is struggling to survive the d isaster of the Supercond ucting Supercollid er. The Supercollid er was a gigantic particle accelerator project that was canceled in 1 993 after about 3 billion d ollars had alread y been spent on it. The cancellation was a personal traged y for…
There are two kind s of scientific revolutions, those d riven by new tools and those d riven by new concepts. Thomas K uhn in his famous book, The Structure of Scientific Revolutions, talked almost exclusively about concepts and hard ly at all about tools. His id ea of a scientific revolution is based on a single…
The breathtaking advance of scientific discovery has the unknown on the run. Not so long ago, the Creation was 8,000 years old and Heaven hovered a few thousand miles above our heads. Now Earth is 4.5 billion years old and the observable Universe spans 92 billion light years. Pick any scientific field and the story is…
Heisenberg’s idea had quickly been dubbed Unschärferelation, which transliterates to “unsharpness relationship,” but as there is really no such term in English ('blurred', 'fuzzy', 'vague' or 'ambiguous' have all been tried), the translation ended up as "the Uncertainty Principle"—when he had not used either term at…
Thus, your knowledge is represented in various forms that are stored in different regions of the brain, to be used by different processes. What are those representations like? In the brain, we do not yet know. However, in the field of Artificial Intelligence, researchers have found several useful ways to represent…
Our earth has orbital motion, revolving once around the sun in about 365 days. Suppose that this orbital motion suddenly stopped completely, but everything else remained the same. How long would it take for the earth to plunge along a straight line into the sun? [...] Kepler's law applies to planetary orbits, whether…
Without going into unnecessary detail, we have built into the simulation a few telltale incoherencies—such as the idea that consciousness depends upon the brain, some logical paradoxes, and the measurement problem (etc) surrounding quantum physics. In SG the pieces are allowed to discover and reflect upon their…
Hyperlinks are fine-grained, bidirectional, and extrinsic. Frequently, an argument is not with a document or chapter as a whole. It is with a particular point that someone made at a particular place in the text. For example, someone refers to the fourth law of thermodynamics, and someone else writes a criticism saying…
Now it is not that the cell biologists can’t point to experiments which seem to fit their views, as is common in natural science. (After all, the Earth’s Moon does indeed have a geocentric orbit.) Good colleagues of mine like Robert Reis are able to produce nematode worms that live ten times longer than their…
It was possible now to look back into time and read off a complete DNA sequence from any moment in an individual’s life. And it was possible to download a copy of that person’s mind and, by putting the two together, regenerated body and downloaded mind, to restore her … We live on Mars, the moons of the outer planets…
Inefficiency arises from the fact that substantial resources have been invested in training these scientists and engineers. The trained have foregone other careers – and the salary that they would have earned – along the way. The public has invested resources in tuition and stipends. If these ‘investments’ are then…