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George I.
@george_ii20
When A Paradigm Shifts
A paradigm shift occurs when one paradigm theory is replaced by another:
- Ptolemy's astronomy giving way to Copernican astronomy.
- Newtonian physics (time and space are the same everywhere for everyone) replaced by Einsteinian physics. (time and space are relative to the observer's frame of reference.)
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Evan Y.
@evan_yy15
What Is A Paradigm Shift, Anyway?
A paradigm shift
To define a paradigm shift, we should first look at a definition for a paradigm.
A paradigm is defined as a pattern that may be copied, or a group of ideas about how someth...
History of the paradigm shift
Psychologist Jean Piaget saw children's development as a series of separate stages marked by periods of adjustments. Inspired partly by Piaget, Thomas Kuhn - a physicist, philosopher, and historian of science -proposed two kinds of scientific change:
- Incremental developments in the course of "normal science."
- Scientific revolutions that accentuate the more stable phases.
He proposed that scientific revolutions are not a matter of incremental progress; they involve "paradigm shifts."
Various distinct senses
The term paradigm can be used in many distinct senses. For example:
- A paradigm could refer to a special kind of achievement that draws an enduring group of adherents away from competing modes of scientific activity, but is open enough to leave all sorts of problems for the new group to solve.
- Paradigms can be used to offer general epistemological viewpoints, like a broad sweep of reality, when it "determines large areas of experience at the same time."
What Thomas Kuhn meant originally by paradigm has, over time, assumed an expansive set of meanings, sufficiently open-ended to allow other possibilities to be explored.
Lila H.
@lila_vhh172
A Short History of the Scientific Revolution
The scientific revolution
Human history is often framed as a series of episodes, representing sudden bursts of knowledge. The Agricultural Revolution, the Renaissance, and the Industrial Revolution are a few examples where ...
Pseudo-Science
Much of the knowledge about the natural world during the middle ages dates back to the teachings of the Greeks and Romans. Many did not question these ideas, despite the many flaws.
- Aristotle taught everything beneath the moon was comprised of four elements: earth, air, water, and fire.
- Greek astronomer Claudius Ptolemy thought that heavenly bodies such as the sun, moon, planets and various stars all revolved around the earth in perfect circles.
- The ancient Greeks and Romans held to the idea that illnesses were the result of an imbalance of four basic substances and was related to the theory of the four elements.
Rebirth and Reformation
- During the Renaissance, there was a renewed interest in the arts and literature. It led to a shift toward more independent thinking.
- In 1517, Martin Luther nailed his 95 theses to the door of the Roman Catholic Church. Luther promoted his thoughts by printing and distributing them, encouraging churchgoers to read the Bible for themselves. This led to the Protestant Reformation.
- In the process, the criticism and reform led to placing the burden of proof ahead in understanding the natural world, paving the way for the scientific revolution.
Noelle H.
@noe_vhh41
What Is the Human Microbiome, Exactly?
The human microbiome
The human body is made up of trillions of human cells. There are possibly three times as many microorganisms (bacteria, fungi, and other microbes) living in and on the human body. The micro...
Using metaphors to describe microbiomes
Metaphors that scientists use to talk about the microbiome influence scientific understanding and can shape medical treatment. For example, viewing the microbiome as an "organ" or a "part of the immune system."
Some physicians support fecal microbiota transplantation (FMT) - treating the malfunction of the gut microbiome by swallowing a pill full of someone else's poo. It follows the same basic principles as an organ transplant, and the treatment is probably a consequence of understanding the microbiome as an organ.
A limited perspective on the human microbiome
To think of a microbiome as an organ creates a limited perspective because organs are relatively set. Generally, a heart will develop and remain the same in each person. But a microbiome is not one thing. It's trillions of things and responds to small changes in our diet, environment, and behavior. It works together with the human body in a symbiotic relationship.
Each metaphor can only capture a part of what the microbiome is. We need all the metaphors to understand the complexity of the microbiome and its role in our bodies.
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