Showing posts with label Science. Show all posts
Showing posts with label Science. Show all posts

Wednesday, December 30, 2015

Some thoughts about reasoning, induction and the limits of facts

When people think of reasoning they often think of deductive reasoning: the old example is "All men are mortal, Socrates is a man, therfore Socrates is mortal." Assuming the premises are true, deductive reasoning gives us a truth.

Inductive reasoning is reasoning from what happened in the past to predict the future. Whenever the X we've seen Y. All men before Socrates eventually died, so he probably will too. 

Deduction yields a purer type of knowledge than induction. Deduction from true premises yields truths. Induction can only yield probabilities: likelihoods or odds.  

The problem with deduction and it's privileged position in teaching reasoning is that true, readily agreed upon premises are rare. I think that we should think more about induction. 

Thinking about induction in law and science

Sunday, October 6, 2013

What is science?

I recently came across a humanities professor's assessment of science (Your professors say, “This is how things are.” They give you certainty.) This person doesn't understand science at all. And maybe it's not his fault, because scientific education rarely gets into the philosophy of science. A little bit goes a long way: 

There is no certainty in science. Scientific "truths" represent a provisional consensus among those who scrutinize the relevant experiments. While it may not be the smoothest process, if a relevant experiment supports a theory, the theory will gain support if continued experiments continue to support it (and the theory is a defeasible proposition to begin with). See how the theory of general relativity came into acceptance for an example. 

Furthermore, the frontiers of scientific understanding force man to cope with experimental results beyond his intuitive grasp. Quantum mechanics gives us a world that is unpredictable, to say the least. 

 I don't want to force collegians to spend hours upon hours in a lab, but I do think that educated people need to understand that science, at its heart, is a process rather than a set of conclusions (for its conclusions only lead to more questions - questions that can't necessarily be answered through the scientific method.)