Quantum paradoxes

The Copenhagen interpretation of quantum mechanics causes paradoxes, at least apparent, when one tries to apply it to the macroscopic world. These two are the best known:

• Schrödinger’s cat paradox. A live cat, a radioactive atom, a vial filled with hydrocyanic acid, and a device that breaks the vial if the radioactive atom decays are placed in an opaque box. If the vial is broken, the cat dies. If it isn’t broken, the cat lives. While the box is closed, the Copenhagen interpretation of quantum mechanics tells us that the radioactive atom is in a superposition of states, decayed and intact, until someone checks it, at which point the superposition of states collapses into one of them. But then, while the box is closed, the cat must be in a superposition of states: alive and dead. Can a cat be alive and dead at the same time? Intuition denies it, but the Copenhagen interpretation of quantum mechanics asserts it. As its name indicates, this paradox was proposed in 1935 by Erwin Schrödinger, one of the fathers of quantum mechanics.

The aliens are coming!

Before the 20th century, some philosophers considered the possibility of the existence of intelligent aliens, from outside the Earth. We can cite Lucretius (De Rerum Natura, book II, 1st century BC), Nicholas of Cusa (15th century), and Giordano Bruno (16th century). The idea was happily adopted by science fiction writers, such as Lucian of Samosata (Vera Historia, 2nd century) and Cyrano de Bergerac (Comic History of the States and Empires of the Moon, 1656), of whom I spoke in another post.

During the 19th century, public attention focused on possible intelligent inhabitants of other bodies in the solar system, especially the moon and Mars. In 1835, The Sun newspaper published in New York six false reports declaring that flying men had been discovered on the moon. It is said that nine out of ten Americans believed it. In fact, The Sun had published a science fiction novel as though if it were real news, making reference to existing people, such as the astronomer Sir John Herschel. Near the end of the century, The War of the Worlds by H.G. Wells (1898) raised the possible existence of Martians, at the time of the scientific controversy over the canals of Mars, which was not finally solved until 1965.

Impossible? Perhaps not!

Lord Kelvin

Throughout the history of science there have been proofs that something is impossible. These proofs are usually true in mathematics, such as that it is impossible to generate the number π with a ruler and compass. Despite which, many amateurs continue to assert that they have made it. I myself have had to face one of these “proofs”.

Another similar case is the proof, this time related to physical science, that it is impossible to build machines with perpetual motion, because they oppose the first or the second principle of thermodynamics. Also, in this case many amateurs insist that they have made it. In these cases, one should not waste time looking for the error, which is known to exist.

Genes arising from nothing?

I have been asked me to clarify a recent piece of news that has hit the popular science press with headlines like the following:

New genes found that can arise from nothing. (Phys.org, 12/8/2023)

The tenacity of the media (and some scientists) to abuse the concept of nothing is unbelievable. They don’t know that nothing does not exist, and that nothing can arise from what does not exist. This is something that pre-Socratic Greek philosophers did know. (The first to assert this was Parmenides). Twenty-five centuries later, modern man, so proud of the advancement of science and technology, makes the same mistake once and again. In these posts I have often criticized the phrase, common today, that the universe arose spontaneously from nothing, which atheists often formulate to deny the creation and, therefore, the existence of God. This phrase does not belong to science (because current theories do not let us go back to the moment of the Big Bang). As philosophy, it’s just a flagrant proof of ignorance.