Posts Tagged ‘Ellis’

With Physics Like That, Who Needs Reality?

June 9, 2015

The quest for reality has been exemplified by science. However:

From a recent New York Times op-ed, “A Crisis at the Edge of Physics:”

“DO physicists need empirical evidence to confirm their theories?

You may think that the answer is an obvious yes, experimental confirmation being the very heart of science. But a growing controversy at the frontiers of physics and cosmology suggests that the situation is not so simple.”

In December 2014 famous physicists George Ellis and Joseph Silk, published in the journal Nature…Scientific Method: Defend the Integrity of Physics…Attempts to exempt speculative theories of the Universe from experimental verification undermine science.”

Science is immensely old. I pointed this out for dogs in “Very Ancient Relationships“. The Ancient Greeks had more than six breeds of cattle which had been evolved in Greece, specifically, to genetically modify them in a suitable manner:

Obtained By Ancient Greece Artificial & Natural Selections

Obtained By Ancient Greece Artificial & Natural Selections

[The Greeks were famous for their mix of natural and artificial selection of cattle.]

Ellis and Silk wrote that:

“This year, debates in physics circles took a worrying turn. Faced with difficulties in applying fundamental theories to the observed Universe, some researchers called for a change in how theoretical physics is done. They began to argue — explicitly — that if a theory is sufficiently elegant and explanatory, it need not be tested experimentally, breaking with centuries of philosophical tradition of defining scientific knowledge as empirical. We disagree. As the philosopher of science Karl Popper argued: a theory must be falsifiable to be scientific.

Actually, Ellis and Silk are completely wrong there. The theory that the Earth turned around the Sun, originated by Aristarchus of Samos (a Greek island in sight of Anatolia, presently swamped by refugees). Its competitor was the geocentric theory. However, there was a strong argument against geocentrism: it stretched credulity. Indeed, the Greeks could compute that the Sun was much much larger than the Earth. It made sense that the little thing turned around the big thing as Buridan pointed out (around 1330 CE). To this geocentrists could only reply with silly arguments such as: man and his creator are big, etc.

So Karl Popper was also wrong. In the most spectacular case.

The Heliocentric Theory was a full blown scientific theory, so was the Geocentric Epicycles. However only a careful study of the illumination of the phases of Venus showed definitively that the the latter was wrong. This happened only in the mid-Seventeenth Century.

Ellis and Silk: “Chief among the ‘elegance will suffice’ advocates are some string theorists. Because string theory is supposedly the ‘only game in town’ capable of unifying the four fundamental forces, they believe that it must contain a grain of truth even though it relies on extra dimensions that we can never observe. Some cosmologists, too, are seeking to abandon experimental verification of grand hypotheses that invoke imperceptible domains such as the kaleidoscopic multiverse (comprising myriad universes), the ‘many worlds’ version of quantum reality (in which observations spawn parallel branches of reality) and pre-Big Bang concepts.”

In other words, many leading physicists are arguing for leaving behind the search for evidence, the old fashion way, leaving no stone unturned, just like smart prehistoric men did. Instead:

“These unprovable hypotheses are quite different from those that relate directly to the real world and that are testable through observations — such as the standard model of particle physics and the existence of dark matter and dark energy. As we see it, theoretical physics risks becoming a no-man’s-land between mathematics, physics and philosophy that does not truly meet the requirements of any.

The issue of testability has been lurking for a decade. String theory and multiverse theory have been criticized in popular books1, 2, 3 and articles…. In March 2014, one of the founders of inflation theory, theorist Paul Steinhardt wrote5 in Nature that “the theory of inflationary cosmology is no longer scientific because it is so flexible that it can accommodate any observational result”.

As I said above, Popper was wrong: falsifiability is neither necessary, nor sufficient to qualify a theory as scientific.

Another example of untestable theory was biological evolution through natural selection: they Greeks knew it to be true. One can read the theory explicitly stated in Lucretius’ giant poem about the universe. However the Greeks did not. know how to test it. The only tests they knew were indirect, they had to do with ARTIFICIAL selection.

Still biological evolution was a valid scientific theory, although untestable for millennia, and perhaps even hundreds of thousand of millennia. Many a shaman is bound to have stumbled upon it.

New York Times: “Implicit in such a maneuver is a philosophical question: How are we to determine whether a theory is true if it cannot be validated experimentally? Should we abandon it just because, at a given level of technological capacity, empirical support might be impossible? If not, how long should we wait for such experimental machinery before moving on: ten years? Fifty years? Centuries? …

Are superstrings and the multiverse, painstakingly theorized by hundreds of brilliant scientists, anything more than modern-day epicycles?”

Not even that. Epicycles were useful and observable. They actually are true in some sense, because they reflect Fourier Analysis of periodic motions.

Today’s most brandished “scientific” theories have nothing good about them, and worse of all, they don’t pass the smell test. Just as the Geocentric Theory did not pass the smell test. Just much worse. Theories were a gazillion universes get created in every cubic millimeters are just insane. Arguable even more insane as the worst from Daesh.

And guess what? Both insanities are related. If all what our supposedly best minds, our most rational, most scientific minds can produce, and brandish, is sheer insanity, why can’t Islam Fundamentalists, Saudi despots, North Korean dictators, and hordes of degenerated plutocrats not be crazy too?

So why not go with the flow? There are jobs to be had there. Saudi Arabia is looking for more eight more executioners to execute those who “insult Islam“. No experience necessary. Just a willingness to whip and “amputate”.

Patrice Ayme’