According to Feynman, a particle samples every path connecting point A and B, hence collecting information about the path to be taken. Manipulation of the experiment, e.g. closing one of the slits, will change information collected and the result observed.

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The Grand Design

The laws of nature seem mysteriously crafted to allow for complex life. Scientific explanations involve the existence of multiple universes with different sets of laws. Thus, a universe with our set of laws is no more special than the unique configuration of our solar system or the very planet we live on.

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Any model which agrees with observation is of equal value to any likewise model. No such model can be said to be more real than any other such model. Models are evaluated in terms of simplicity and their ability to make clear, falsifyable preditions.

Simon Steiger

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The heliocentric model of Johannes Kepler can not be said to be more 'real' than the much older geocentric model of Ptolemy. Both agree with observation, although the heliocentric model is much more elegant in its explanation.

Simon Steiger

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Our being restricts the environments we could potentially find ourselves in. We could not exist in a solar system with two suns, and thus find ourselves in a system with a single sun. This type of deduction is called 'weak anthropic principle'.

Simon Steiger

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The habitable zone of a star ('Goldilocks Zone') is determined by the size and temperature of the star. A planet too close will be too hot for life; those beyond the zone too cold.

Simon Steiger

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Physicist John Wheeler considered replicating the double-slit experiment with photons from a distant quasar. Whether we observe or not (thus altering the resulting inference pattern) will impact light that emerged even before our sun came to exist.

Simon Steiger

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Ever thought about the dimensions of the big bang? No? Try to imagine a coin of one centimeter diameter suddenly blowing up to ten million times the width of the Milky Way.

Simon Steiger

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Feynman assumes that particles at microscopic scale travel from A to B by taking every possible path - simultaneously. This accounts for the inference patterns observed in the double slit experiment.

Simon Steiger

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Information about each path can be imagined as a vector, called phase. Different phases can enhance or diminish each other. Adding up all the phases enables us to calculate the probability of the particle reaching point B.

Simon Steiger

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Humanity's role in the universe is in no way central or privileged. Despite this, only a very narrow range of possible universes could support organisms as complex as humans. We had a great influence on creation - indirectly.

Simon Steiger

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In 1929, Edwin Hubble deducted that the universe must be expanding. Recession speed increases with distance. The extrapolation of this idea into the distant past lead to the big bang hypothesis.

Simon Steiger

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To better visualize the expansion and increasing speed of recession, imagine all galaxies on the surface of an inflating baloon. After a certain time, a galaxy near the observer will have moved less than an already very distant galaxy.

Simon Steiger

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Universes appear randomly due to quantum fluctuations. Most collapse after a fraction of time, a few inflate to critical size. All universes start off in a very similar way, each with all possible histories ahead of them. In later stages, different universes differ immensely.

Simon Steiger

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Adding up all energies within the universe, the resulting number must be zero. Bodies not requiring any energy to assemble can appear entirely at random.

Simon Steiger

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Inside a sufficiently inflated universe, space is locally stable. This dictates that any isolated body surrounded by empty space must have a positive energy total. In other words: To assemble this body, work has to be done.

Simon Steiger

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In the very early universe, there were four dimensions of space and none of time. Time is a modified space dimension. To ask what came before the beginning of the universe is as meaningless as asking what is south of the South Pole.

Simon Steiger

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General theory of relativity illustrates that time and space are not independant. Once quantum effects are taken into account, time can be warped to an extent that it behaves identical to another space dimension. This requires an extreme scenario, e.g. the big bang.

Simon Steiger

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Moving clocks run more slowly than unmoved clocks ('Time dilation'). This also applies to biological clocks, making moving people age more slowly. However, this effect is only noticeable at extremely high velocities, such as 50% of light speed.

Simon Steiger

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The strong anthropic principle suggests that our existence imposes not only constraints on the environment we live in, but also on the utmost fundamental form and content of the laws of nature themselves.

Simon Steiger

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Not only planet Earth, but also the configuration of our solar system and the design of the fundamental laws of nature of our universe seem oddly conductive to human life. The tiniest variation in any law of nature would lead to an entirely inanimate universe.

Simon Steiger

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1. GravityThe weakest of the four forces. Its long range implies that all objects in the universe attract each other. For large bodies, gravitational forces can dominate over all other forces because they are additive.

Simon Steiger

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2. ElectromagnetismThis force is much stronger than gravity while also operating at long range. It requires affected particles to be electrically charged. Biology and chemistry are the result of electromagnetic interactions.

Simon Steiger

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3. Weak nuclear forceThis force causes radioactivity. It played a central role in the formation of elements in stars during the early stages of the universe. There is no contact with this force in everyday life.

Simon Steiger

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4. Strong nuclear forceThis force binds the components of atomic nuclei together. The strong nuclear force is the energy source for stars and nuclear power facilities. As with the weak force, we experience no direct contact with it.

Simon Steiger

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M-Theory is a network of domain specific theories to explain every aspect of the universe. Whenever there is overlap, overlapping theories have to agree on observations made. Hence, M-Theory can be treated as a single theory.

Simon Steiger

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Now, [...] faced with scientific claims like [...] the multiverse hypothesis [...], the Catholic Church will again defend human nature by proclaiming that the immanent design in nature is real.

Christoph Schönborn, archbishop of Vienna

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The most incomprehensible thing about the universe is that it is comprehensible.

Albert Einstein, theoretical physicist

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Also known as the Buckyball experiment, Austrian researchers shot molecules through a barrier with two slits. Results did not agree with Newtonian physics but instead showed an inference pattern resembling expected results for light waves.

Simon Steiger

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On an atomic scale, all particles exhibit features known from the wave/particle duality of light. Everyday Newtonian physics can not explain observations on a microscopic scale but approximate results on macroscopic scales.

Simon Steiger

Oh, come off it, I've only directed three plays for the RSC.

Edward Hall

Normally I avoid movies where the aliens look like humans. It's cheesy.

Jon Heder

Political satire became obsolete when they awarded Henry Kissinger the Nobel Peace Prize.

Tom Lehrer

As people move further away from a meat-based diet, I think the focus will shift to using grains as the central focus of our food supply.

Daniel Humm

Until you've lost your reputation, you never realize what a burden it was or what freedom really is.

Margaret Mitchell

Serbia is open for business.

Ivica Dacic

The invariable mark of wisdom is to see the miraculous in the common.

Ralph Waldo Emerson

In the Upanishads they talk about the path of the sun and the path of the moon. The path of the moon is rebirth. The path of the sun leads to self-knowledge, from which there is no return.

Frederick Lenz

We would never comment on private correspondence.

Prince Charles

I'm excited for people to realize that I'm 25 years old and not a teenager anymore... even though I still look 18 and can't get into a bar to save my life!

Brittany Snow

Fiction is a report from the interior.

Deborah Eisenberg

No one ever made a difference by being like everyone else.

Buckminster Fuller

I think operating systems work best if they're free and open. Particular applications are more likely to be proprietary.

Larry Wall

When she became very ill with heart trouble, I saw that it would be impossible for my parents to provide for my studies, and I obtained their permission to go to sea to make a career for myself there.

Fritz Sauckel

I've mellowed quite quickly.

Colin Baker

I'm not a political person. When I start to get into it, it just upsets me. I feel so powerless when it comes to politics. So I've just decided to be non-political and very, very pro-soldier.

Channing Tatum

Like so many others, I came to romance during the golden age of it - Judith McNaught, Julie Garwood, Johanna Lindsey and Jude Deveraux were at the height of their historical domination. Without those women, I wouldn't be a romance novelist.

Sarah MacLean

At the end of the day, though, the band members have to be strong. It's down to the individuals in the unit. Listen to me, I'm talking like I'm in the army and this is my squadron.

Shirley Manson

I said, yet again, for Germany, Europe is not only indispensable, it is part and parcel of our identity. We've always said German unity, European unity and integration, that's two parts of one and the same coin. But we want, obviously, to boost our competitiveness.

Angela Merkel

I think the good thing about Dogme is that it forces you into an extreme sense of reality because there's no artificial light and no set design and all of those icings on the cake that you usually have on a movie.

Susanne Bier