1870 · Louis Pasteur
Études sur la maladie des vers à soie, volume 1
What this work is
Pasteur's report on pébrine, the disease that was collapsing the French silk industry. He examined silkworms, moths, and eggs under the microscope for small bodies he called corpuscules, argued the disease was both contagious and passed through the egg, and proposed a breeding method: inspect each moth microscopically and keep eggs only from moths free of corpuscules.
Verdict
UNSCIENTIFIC
Neither the paradigm nor the work inside it passes. The verdict is unscientific.
1·This work · inside the paradigm
UNSCIENTIFIC
Does not follow the scientific method within Germ Theory.
2·Paradigm · Germ Theory
UNSCIENTIFIC
Fails the tests. This decides the verdict.
How the verdict is decided
The verdict grades the whole picture: the paradigm this work assumes, and how the work was carried out inside it. A work can follow the scientific method rigorously and still be unscientific, because rigor inside a paradigm only shows the conclusion was reached carefully. It cannot verify the premise the paradigm rests on. So the paradigm decides the verdict. The work’s own score is kept because it shows how the conclusion was built.
1·This work
Did this work test its claim with methods that are independent, falsifiable, and non-circular?
UNSCIENTIFIC
Pasteur claims that microscopic corpuscules cause pébrine, one of two distinct diseases devastating French silkworm populations, and that this disease spread through the silk egg trade. All three tests fail.
Independently Verifiable
Fail
Pasteur saw dead worms and worms that would not eat, and those observations are real, but he also looked through a microscope and saw dots, and the germ model told him those dots were disease-causing corpuscules.
Falsifiable
Fail
When worms died without corpuscules, Pasteur classified it as a separate disease called morts-blancs, so nothing the study found could have disproved the claim that corpuscules cause pébrine.
Non-Circular
Fail
The disease was named after the corpuscules, the tool was built to find corpuscules, and the detection of corpuscules was offered as proof that corpuscules cause the disease named after them.
Why
Pasteur observed silkworms dying across France and recorded production figures anyone could verify. He watched worms refuse food, languish on leaves, and drop dead while still looking healthy. Those observations are real. But he also put worm tissue under a microscope and saw small dots. The germ model told him those dots were corpuscules that cause disease. He named the illness "maladie des corpuscules" after what the model said he was seeing. When worms died without corpuscules, he classified that as a separate disease rather than evidence that corpuscules do not cause illness. The disease was defined by the presence of the corpuscules, the corpuscules were detected by a tool built to find them, and the detection was offered as proof that the corpuscules cause the disease. The microscope produced an image. The model supplied the meaning. The claim only exists as that interpretation.
2·Paradigm · Germ Theory
Does the framework this work assumes pass the three tests?
UNSCIENTIFIC
Independently Verifiable
Fail
The germ model supplied the meaning for what Pasteur saw under the microscope, and the dots became pathogens because the model said so, not because anyone independently verified the full causal chain from organism to disease.
Falsifiable
Fail
When worms sickened without the claimed organism, the model created a second disease category rather than accepting that the organism might not cause illness.
Non-Circular
Fail
The corpuscules were defined by the germ model and then detected using tools built from that definition, and the detection was cited as proof of the definition.
Why
Germ theory takes a microscopic organism and declares it the cause of a specific disease without completing the causal chain. Pasteur saw dots under a microscope and called them disease-causing corpuscules. He never independently demonstrated that those dots cause silkworm illness without confounders. When worms sickened without the dots, the model created a second disease category rather than questioning whether the dots cause anything. The terrain of the silkworm, its food, its environment, and its breeding conditions were not evaluated as causes. The model treats the organism as the disease. Sick worms with the organism confirm the model. Sick worms without the organism get a different label. Healthy worms with the organism would be called carriers. Every outcome confirms the premise because the framework was designed to absorb every result.
From the work
Je démontrerai qu'elles se rapportent à deux maladies distinctes et non à une seule ou à plus de deux, comme on l'avait cru par erreur jusqu'en 1867
Elle porte les noms de pébrine ou de gatline, ou encore de maladie des corpuscules.
vers, au lieu de s'emparer de la feuille avec voracité dès qu'elle était jetée sur les tables, se promenaient languissamment sur elle avant de la saisir
Source
Études sur la maladie des vers à soie, volume 1
Louis Pasteur
1870 · Primary work
Scored from primary work · Rubric 1.0