‘Just a Theory’ / Abuse of Science Terms

Organic-vs-Natural

“Weasel words” in USDA requirements for food labels. ‘Toxic persistent pesticides’ This means that if the USDA doesn’t list a pesticide as ‘toxic’ it’s allowable. ‘Persistent’ How is this quantified? Some arbitrary level and time frame? Yes – one that the producers dictate. Look at all the other weasel words: allowable, lower levels (compared to what?), animal welfare (20 chickens stuffed into a cage instead of 25?) Inspections? How often, how thorough? How many inspectors are there? 1,000, 100, 10? In other words, the USDA empowers and enables food industry lies. One might note that NATURAL means absolutely nothing except that the price (of the same old food) will be higher.

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‘Just a Theory’: 7 Misused Science Words

(Should scientists “retreat” from popular culture or do more to improve science education?)

From “theory” to “significant,” here are seven scientific words that are often misused.

1. Hypothesis

The general public so widely misuses the words hypothesis, theory and law that scientists should stop using these terms, writes physicist Rhett Allain of Southeastern Louisiana University, in a blog post on Wired Science. [Amazing Science: 25 Fun Facts]

“I don’t think at this point it’s worth saving those words,” Allain told LiveScience.

A hypothesis is a proposed explanation for something that can actually be tested. But “if you just ask anyone what a hypothesis is, they just immediately say ‘educated guess,'” Allain said.

2. Just a theory?

Climate-change deniers and creationists have deployed the word “theory” to cast doubt on climate change and evolution.

“It’s as though it weren’t true because it’s just a theory,” Allain said.

That’s despite the fact that an overwhelming amount of evidence supports both human-caused climate change and Darwin’s theory of evolution.

Part of the problem is that the word “theory” means something very different in lay language than it does in science: A scientific theory is an explanation of some aspect of the natural world that has been substantiated through repeated experiments or testing. But to the average Jane or Joe, a theory is just an idea that lives in someone’s head, rather than an explanation rooted in experiment and testing.

3. Model

However, theory isn’t the only science phrase that causes trouble. Even Allain’s preferred term to replace hypothesis, theory and law — “model” — has its troubles. The word not only refers to toy cars and runway walkers, but also means different things in different scientific fields. A climate model is very different from a mathematical model, for instance.

“Scientists in different fields use these terms differently from each other,” John Hawks, an anthropologist at the University of Wisconsin-Madison, wrote in an email to LiveScience. “I don’t think that ‘model’ improves matters. It has an appearance of solidity in physics right now mainly because of the Standard Model. By contrast, in genetics and evolution, ‘models’ are used very differently.” (The Standard Model is the dominant theory governing particle physics.)

4. Skeptic

When people don’t accept human-caused climate change, the media often describes those individuals as “climate skeptics.” But that may give them too much credit, Michael Mann, a climate scientist at Pennsylvania State University, wrote in an email.

“Simply denying mainstream science based on flimsy, invalid and too-often agenda-driven critiques of science is not skepticism at all. It is contrarianism … or denial,” Mann told LiveScience.

Instead, true skeptics are open to scientific evidence and are willing to evenly assess it.

“All scientists should be skeptics. True skepticism is, as [Carl] Sagan described it, the ‘self-correcting machinery’ of science,” Mann said.

5. Nature vs. nurture

The phrase “nature versus nurture” also gives scientists a headache, because it radically simplifies a very complicated process, said Dan Kruger, an evolutionary biologist at the University of Michigan.

“This is something that modern evolutionists cringe at,” Kruger told LiveScience.

Genes may influence human beings, but so, too, do epigenetic changes. These modifications alter which genes get turned on, and are both heritable and easily influenced by the environment. The environment that shapes human behavior can be anything from the chemicals a fetus is exposed to in the womb to the block a person grew up on to the type of food they ate as a child, Kruger said. All these factors interact in a messy, unpredictable way.

6. Significant

Another word that sets scientists’ teeth on edge is “significant.”

“That’s a huge weasel word. Does it mean statistically significant, or does it mean important?” said Michael O’Brien, the dean of the College of Arts and Science at the University of Missouri.

In statistics, something is significant if a difference is unlikely to be due to random chance. But that may not translate into a meaningful difference, in, say, headache symptoms or IQ. (Psychology depends on weasel words)

7. Natural

“Natural” is another bugaboo for scientists. The term has become synonymous with being virtuous, healthy or good. But not everything artificial is unhealthy, and not everything that’s natural is good for you.

“Uranium is natural, and if you inject enough of it, you’re going to die,” Kruger said.

Natural’s sibling “organic” also has a problematic meaning, he said. While organic simply means “carbon-based” to scientists, the term is now used to describe pesticide-free peaches and high-end cotton sheets, as well. (Marketing and advertising intentionally misrepresent ‘natural’. That is, they lie to take advantage of consumer ignorance.)

Bad education

But though these words may be routinely misunderstood, the real problem, scientists say, is that people don’t get rigorous science education in middle school and high school. As a result, the public doesn’t understand how scientific explanations are formed, tested and accepted.

What’s more, the human brain may not have evolved to intuitively understand key scientific concepts such as hypotheses or theories, Kruger said. (Magical thinking is the default mode of social typical brain processes.) – Most people tend to use mental shortcuts to make sense of information they’re presented with every day.

One of those tendencies is to make a “binary distinction between something that is true in an absolute sense (belief) and something that’s false or a lie,” (Black and white thinking is a social typical symptom) Kruger said. “With science, it’s more of a continuum. We’re continually building our understanding.”

Follow Tia Ghose on Twitter @tiaghose.Follow LiveScience @livescience, Facebook & Google+. Original article on LiveScience.com

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2 thoughts on “‘Just a Theory’ / Abuse of Science Terms

  1. I’m not sure it is even possible to find seven words to replace those and whose definitions all branches could agree upon. If there isn’t agreement between the branches then replacing them just seems like so much fluff to get applause from peers.

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