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Error Alert: Top 10 Science Gaffes by Famous Scientists
We expect scientists to know about science because that’s what they are paid to do. But don’t let the lab coats fool you; not only do scientists fall asleep on the job, but after all the nuclear wedgies in high school, they have even more motivation to relax. Sometimes they just make mistakes because they are human.
It’s perfectly understandable that scientists won’t know about discoveries made after they were dead -for example, Leonardo da Vinci, despite sketching a helicopter, didn’t know about gravity. However, some of the biggest names in science made serious scientific gaffes despite it being their job to know better.
So next time you make a fool of yourself at work, just remember you are in the same company as…
10. Aristotle
One of the oldest and most controversial theories in psychology is the blank slate theory, which states that people are born with no built-in personality traits or proclivities. The most popular proponents of this theory were Aristotle, St. Thomas Aquinas, and John Locke. For them, nothing was instinct or a result of nature. The idea found its most famous expression in psychology in the works of Sigmund Freud, whose theories of the unconscious stressed that the elemental aspects of an individual’s personality were constructed by their previous experiences.
While there’s little doubt that a person’s experiences and learned behaviors have a huge impact on their disposition, it is also now widely accepted that genes and other genetic (i.e. family) traits inherited from birth, along with certain innate instincts, are important players in a human being’s developmental process. This was only proven after years of research that covered the ways in which similar gestures like smiling and certain features of language could be found throughout the world in radically different cultures. Meanwhile, studies of adopted children and twins raised in separate home have come to the conclusion about the ways some innate characteristics are inherited from birth.
9. Jean Joseph Le Verrier
Vulcan was a mystery planet that many astronomers, including Jean Joseph Le Verrier, believed to exist between Mercury and the Sun. Le Verrier first proposed its existence after he was unable to explain the peculiarities surrounding Mercury’s orbit. He argued that this had to be caused by some object (i.e. planet or moon) acting as a gravitational force. La Verrier called this supposed planet Vulcan, after the Roman god of fire. Without La Verrier acting as a cheerleader for Vulcan’s existence, astronomers started doubting the validity of this theory. The search was effectively abandoned in 1915, when Einstein’s theory of general relativity helped explain once why Mercury orbited the Sun in such a strange fashion.
8. Pre-19th Century Physicians
Laugh it out, but up until the late 19th century, doctors didn’t think they needed to wash their hands before prepping for surgery.
The result? Infection. Most early-19th century doctors tended to attribute contagion to “bad air” and blamed disease on imbalances of the “four humors” (that’s blood, phlegm, yellow bile and black bile).
“Germ theory” (the revolutionary idea that germs cause disease) had been around for a while, but it wasn’t until Louis Pasteur started re-theorizing it that people started listening. It took a while, but many doctors, such as Joseph Lister, were able to connect the dots and realize that hospitals and doctors were able to pass on life-threatening germs to patients.
Lister went on to pioneer the idea of actually cleaning wounds and using disinfectant. He and Pasteur are considered the fathers of sanitizer. So next time you buy a Purell bottle, thank Lister and Pasteur for inventing it.
7. Ptolemy
Ptolemy was an ancient astronomer whose geocentric theory became the dominant view of the universe, until Copernicus. Ptolemy’s writings were quite influential in early astronomy, and he was revered throughout the Middle Ages by Europeans and Arabs alike. He also provided the most authoritative compilation of constellations in antiquity. Although he helped to discredit Aristarchos’ heliocentric universe, and ensured the geocentric model would be the theory that would be accepted for the next 1,000 years, Ptolemy did much to raise the standard of astronomy. As we all know, Ptolemy was wrong and the world does not revolve around the earth. Galileo Galelei would continue advocating for Copernicus’ theory, before he was placed under house arrest for heresy by the Roman Catholic church.
6. Claudius Galen of Pergamon
We don’t expect ancient physicians to have a comprehensive knowledge of medicine, but it would be reasonable to expect them to be able to identify basic body parts. You know, in order for them to attach the leaches. So we aren’t setting a really high bar for Galen of Pergamon, who is widely considered to be the best surgeon of his time.
Galen was a Greek-born physician who practiced in Rome during the second century. He was so good at cutting people up and putting them back together in the right order that he became the personal physician of several emperors. He’s known for pioneering many medical practices and -mind you, this is before proper anesthetic was developed- performed brain and eye surgery. The latter two are even more impressive when you consider that…
In 160 AD, Galen moved to Rome to work. With the exception of a brief return to Pergamum, he spent his golden years in the Roman capital. He became physician to the emperor Marcus Aurelius and would later serve Aurelius’s successors, Commodus and Septimius Severus in the same capacity.
…Galen thought the liver pumped blood, which you might have noticed is something only the heart does (organ union rules). To his credit, he was the first to distinguish between arteries and veins, and laid the foundation for continuing study in the circulatory system. However, therein lay the problem: he didn’t realize that the circulatory system is, uhm, circulatory. According to his theory, blood was produced in the liver and then transported through the body to be “consumed”. He neglected to explain how the liver was able to pump blood without any moving parts.
Galen studied the anatomy of the respiratory system, and of the heart, arteries, and veins. But he did not discover the circulation of the blood in the human body, and he believed that blood passed from one side of the heart to the other through something he referred to as the “invisible pores” in the dividing wall. Galen was confident that the venous and arterial systems were each sealed and separate from one other. William Harvey, discoverer of the circulation of the blood, wondered how Galen, having gotten so close to the answer, did not himself arrive at the same conclusion.
This very wrong idea stuck around for quite a long time. Well, if you consider 1,400 years a long time. Galen was so influential that no one got around to questioning his theories until 1628 when English physician William Harvey proved that, yep, the circulatory system is in fact circulatory. Of course this didn’t discourage Harvey from continuing the practice of blood-letting to cure the flu -another idea advocated by Galen.
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