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Introduction: How to reason

Section 9:
Facts, knowledge and science


Science is the only method we have of determining facts.

Facts exist whether or not we are aware of them. The Americas existed long before the first people arrived there. Blood circulated in the bodies of humans and animals long before the phenomenon was described by Ibn al-Nafis in the thirteenth century or by William Harvey three hundred years later.

Knowledge is the information that people have about the universe in which they live. As individuals, we assume that our knowledge is accurate, but we may be wrong. How accurate our knowledge is, and how willing and able we are to amend it depends partly on on our personalities and partly on our exposure to new information.

Together, people have shared knowledge. This is much greater than individual knowledge - not everyone knows about medieval Persian poets or baseball scores in the 1960s. Shared knowledge is also more accurate - more people know that the capital of Nigeria is Abuja than hold the mistaken belief that it is Lagos.

Even though shared knowledge is more accurate than individual knowledge, it is not accepted by everyone. This is because people learn things in different ways and have different abilities to understand what they learn. A prime example of shared knowledge which many people reject is evolution.

We learn about facts and update our individual and shared knowledge through science.

What is science? Although we talk about "the sciences", such as biology and physics, which represent bodies of knowledge, science itself is not something we know but a system of acquiring knowledge.

This system is critical in determining facts. The components of science are:


a. observation of a phenomenon
    example: rainfall


b. creation of a hypothesis (a possible
    explanation for the phenomenon)
    example: rainfall is caused by a
    supernatural being




How good is your reasoning?

Can you distinguish lies from truth? Or a good argument from a false one? Can you when tell someone is trying to pull the wool over your eyes?

We keep physically fit by exercising regularly and eating healthy
food. The same is true of our minds - we need regular mental exercise and a good diet of solid facts and logic.

This chapter offers basic reasoning skills to help you understand the contradictions that lie at the heart of all religion.

0.1: Basic principles
Start at the beginning

0.2: What do we know?
Separate fact from fiction

0.3: Start with the question ...
... not with the answer

0.4: All the evidence ...
... not just some of it

0.5: Cause and correlation
They're not the same

0.6: Don't jump to conclusions ...
... or you could land in the ...

0.7: No way
Proving a negative

0.8: Occam's Razor
The simplest solution

0.9: Facts, knowledge and science
What we know and how we know it

0.10: Know or believe?
The impossibility of God

0.11: Reason and faith
Understanding the difference

0.12: Summary




Finished the introduction? Move on to

Chapter 1
Defining God


Does God exist? Before we try to answer that question we need to have a clear idea of who or what God is. How do we describe God? What versions of God are on offer?



Not sure what you're looking for?

If there's a word that you don't recognize, it might be defined here.

If there's a topic you're looking for, check one of the Search boxes on this page.

If there's something you want to ask, send an e-mail. We can't guarantee an answer, but we'll do our best.
c. testing of the hypothesis
    example: does prayer lead to rainfall?


    if testing shows the hypothesis is not accurate in every identical situation*, reject it
    and create a new hypothesis


    if the hypothesis proves predictable and accurate...

d. ...accept the hypothesis as fact.


Facts proved by science become part of shared human knowledge, irrespective of whether people are aware of, accept or reject them.

Several methods of investigating or describing phenomena are not scientific, either because they do not make hypotheses which can be predicted and tested or because they make hypotheses which fail. These non-sciences include astrology, Creationism and Intelligent Design.

We will come back to the questions of Creationism and Intelligent Design later. For the moment all we need to remember is that science is the only method we have of determining facts.


* This is known as predictability. A hypothesis can only be accepted as fact if it accurately predicts the outcome of a test every time. For example, if pure water is heated at sea-level, we can predict it will always convert to steam at 100 degrees Celsius. Water's boiling point is no longer a hypothesis; it is fact.



This is the end of the basic course in reasoning.

If you want a short cut to atheism, read the final two chapters in this section - Know or believe? and Reason and faith - or go to a fuller discussion at Instant atheism!.

If you'd prefer to take the long road and analyse the evidence for and against God's existence, move to Chapter One: Defining God.

And if you've forgotten some of the points made so far, check out the summary to this introduction.




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If God existed, he would...

admire the beauty of a universe that he did not create

recognize that eternity is meaningless

deny both heaven and hell

disown all men and women who speak in his name

denounce the harm caused by religious "morality"

help the human race to thrive without him

If God existed, he would be an atheist.



What is the difference between science and faith?

science is certain of nothing and requires proof of everything

faith is certain of everything and requires proof of nothing

Which do you trust?


"I know there is no God"
or
"I believe there is no God"
???


Check the answer





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