Science, theory, law, confusion
Sam Andrews writes about an important topic, what is science anyway?
Because I’m lazy busy, I’ve put together a list of old shares about the scientific method and correlation vs. causation.
Of Cabbages and Kings
https://plus.google.com/+BrianKoberlein/posts/XXShqYHt5pm
Steps of scientific method meme version
https://plus.google.com/+sciencesunday/posts/GLX78mbKvy1
Steps of scientific method baby version
https://plus.google.com/+sciencesunday/posts/3QKDAxnxjzR
Richard Feynman on the Scientific Method
Steps of scientific method Futurama version
https://plus.google.com/+sciencesunday/posts/HYvzNGLvTsQ
Another example of correlation does not equal causation
https://plus.google.com/+sciencesunday/posts/ZGyKHWGTfkM
Correlation versus Causation
https://plus.google.com/+sciencesunday/posts/1o9zv2BbEGu
#ScienceSunday
Originally shared by Samantha Andrews
So what is all this science malarkey anyway?
The UK Science Council define science as ”the pursuit and application of knowledge and understanding of the natural and social world following a systematic methodology based on evidence”
As the Council explain, this methodology has some criteria…
”Scientific methodology includes the following:
Objective observation: Measurement and data (possibly although not necessarily using mathematics as a tool)
Evidence
Experiment and/or observation as benchmarks for testing hypotheses
Induction: reasoning to establish general rules or conclusions drawn from facts or examples
Repetition
Critical analysis
Verification and testing: critical exposure to scrutiny, peer review and assessment
Sounds all pretty straight forward doesn’t it? A bit too straight forward perhaps. We don’t all have a background in science so it’s not surprising that at times there is some confusion over what science is, how it is done, and what it can actually tell us about the natural and social world. Fortunately for us, there have been three excellent open access articles have been published in The Conversation this week which address some of the issues for communicating science:
Where’s the proof in science? There is none
Astrophysist Geraint Lewis from the The University of Sydney kicks of this fabulous trio by explaining one of the misconceptions of science: proof. Yes that’s right, science doesn’t really prove anything. So what does it do? In his article, Geraint hands the last word over to Richard Feynman. I think I will to:
”I have approximate answers and possible beliefs in different degrees of certainty about different things, but I’m not absolutely sure of anything.”
http://theconversation.com/wheres-the-proof-in-science-there-is-none-30570
Clearing up confusion between correlation and causation
Correlations are all to do with relationships between different factors. Like chocolate and Nobel Prize winners. Take a look at the graph below, produced by Franz Messerli of Columbia University. Apparently there is a correlation between chocolate consumption. We can even put a number on this – a ‘P value’ to describe the ‘strength’ of the correlation. In this case the value was 0.0001 – which means that “there is a less than one-in-10,000 probability of getting results like these if no correlation exists” . But as Mathematicians Jon Borwein and Michael Rose from the University of Newcastle (UON), Australia explain, correlation does not imply causation, which means that increasing your chocolate consumption won’t increase your chances of winning the Nobel Prize. http://theconversation.com/clearing-up-confusion-between-correlation-and-causation-30761
Why research beats anecdote in our search for knowledge
_”Certainty is seductive” writes Philosopher Tim Dean from the University of New South Wales, _”so we tend to cling to it. We hunt for evidence that buttresses it, while ignoring or rejecting evidence that threatens to undermine it”. Research, on the underhand, embraces uncertainty. It isn’t about finding evidence to back your point of view, it’s about increasing our knowledge – and doing so with a scientifically backed evidence base. For researchers, sometimes that means re-evaluating your point of view. http://theconversation.com/why-research-beats-anecdote-in-our-search-for-knowledge-30654
Image: From Franz Messerli’s paper Chocolate Consumption, Cognitive Function, and Nobel Laureates published in the New England Journal of Medicine. Franz added a disclaimer to his paper, that he ”regular daily chocolate consumption, mostly but not exclusively in the form of Lindt’s dark varieties.” Unfortunately the paper is behind a paywall, but if you fancied a look you can find it here www.dx.doi.org/10.1056/NEJMon1211064
#science #sciencesunday #scicomm
