Tag Archives: Law of Non-Contradiction

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The logical contradictions in Richard Dawkins’ worldview

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From Uncommon Descent. (H/T ECM)

Excerpt:

In River out of Eden : A Darwinian View of Life Richard Dawkins wrote:

The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind, pitiless indifference. As that unhappy poet A.E. Housman put it: ‘For Nature, heartless, witless Nature Will neither care nor know.’ DNA neither cares nor knows. DNA just is. And we dance to its music.

In a 2007 New Scientist/Greenpeace Science debate, Dawkins said:

Far from being the most selfish, exploitative species, Homo sapiens is the only species that has at least the possibility of rebelling against the otherwise universally selfish Darwinian impulse . . . If any species in the history of life has the possibility of breaking away from short term selfishness and of long term planning for the distant future, it’s our species. We are earth’s last best hope even if we are simultaneously, the species most capable of destroying life on the planet. But when it comes to taking the long view, we are literally unique. Because the long view is not a view that has ever been taken before in whole history of life. If we don’t plan for the future, no other species will . . .

Well, which is it? Is there right and wrong or isn’t there? Are we selfish or aren’t we? Do we have free will or don’t we?

Is this why Dawkins refuses to debate William Lane Craig? Is his schtick just about selling books to gullible atheists who don’t understand the laws of logic?

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Is anything that Deepak Chopra says remotely logical?

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I say “NO”. It’s just happy-clappy jibba-jabba!

Here, look at this post from CARM.

Excerpt:

Logic is the backbone of critical thinking. Logic is extremely useful for uncovering error and establishing truth. There are principles of logic and I would like to introduce you to the first three laws of logic. These are very important.

  1. The Law of Identity
  2. The Law of Non-Contradiction
  3. The Law of Excluded Middle

The law of identity states that A is A. An Apple is an Apple. In other words, something is what it is. If something exists, it has a nature, an essence. For example, a book has a front and back cover with pages. A car has four wheels, seats, doors, windows, etc. A tree has branches, leaves, a trunk, and roots. This also means that anything that exists has characteristics. We recognize what something is by observing its characteristic. You know that a tree is a tree because you see its branches, it’s leads, its trunk, etc.
Furthermore, if something has an identity, it has a single identity. It does not have more than one identity. In other words, if something exists it has a set of attributes that are consistent with its own existence. It does not have a set of attributes that are inconsistent with itself. Therefore we can easily conclude that a cat is not a parachute. An Apple is not a race car. A tree is not a movie.

The law of non-contradiction tells us that A cannot be both A and not A at the same time and in the same sense. In other words, something (a statement) cannot be both true and false at the same time and in the same way. We use the law of non-contradiction constantly in discussions and debates because we are naturally able to recognize when someone is contradicting himself. If I were to tell you that yesterday I went shopping and then later I told you that yesterday I did not go shopping, you would be correct in saying there was a contradiction. A contradiction occurs when one statement excludes the possibility of another and yet both are claimed to be true. Since we know that both cannot be true, we see a contradiction. From this principle, we can conclude that truth is not self-contradictory. This is a very important concept. Let me repeat it. Truth is not self-contradictory.

The law of excluded middle says that a statement is either true or false. For example, my hair is brown. It is either true or false that my hair is brown. Another example: I am pregnant. The statement is either true or false. Since I am a male, it is not possible for me to be pregnant. Therefore, the statement is false. If I were a female, it would be possible for me to be pregnant (given normal bodily conditions). A woman is not “kind-of” pregnant. She either is or is not pregnant – there is no middle position. The law of excluded middle is important because it helps us deal in absolutes. This is particularly important in a society where relativism is promoted and truth statements are denied.

Please review these three laws and become familiar with them. They are extremely important when developing critical thinking skills.

Deepak Chopra says what feels good to him. But we have to test his words using the laws of logic. If his words pass that test, then we go on to empirical validation against the external world.

Polemics

Doug Groothuis explains the correspondence theory of truth

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Check out this short paper on truth and postmodernism by Christian philosopher Douglas Groothuis.

Excerpt:

The correspondence view of truth, held by the vast majority of philosophers and theologians throughout history, holds that any declarative statement is true if and only if it corresponds to or agrees with factual reality, with the way things are. The statement, “The desk in my study is brown,” is true only if there is, in fact, a brown desk in my study. If indeed there is a brown desk in my study, then the statement, “there is no brown desk in my study,” is false because it fails to correspond to any objective state of affairs.

The titanic statement, “Jesus is Lord of the universe,” is either true or false. It is not both true and false; it is not neither true nor false. This statement either honors reality or it does not; it mirrors the facts or it does not. The Christian claims that this statement is true apart from anyone’s opinion (see Romans 3:4). In other words, it has a mind-independent reality. Minds may recognize this truth, but minds do not create this truth. This is because truth is a quality of some statements and not of others. It is not a matter of subjective feeling, majority vote or cultural fashion. The statement, “The world is spherical,” was true even when the vast majority of earthlings took their habitat to be flat.

The correspondence view of truth entails that declarative statements are subject to various kinds of verification and falsification. This concerns the area of epistemology, or the study of how we acquire and defend knowledge claims. [2] A statement can be proven false if it can be shown to disagree with objective reality. The photographs from outer space depicting the earth as a blue orb (along with prior evidence) falsified flat-earth claims. Certainly, not all falsification is as straightforward as this; but if statements are true or false by virtue of their relationship to what they attempt to describe, this makes possible the marshaling of evidence for their veracity or falsity. [3]

Therefore, Christians — who historically have affirmed the correspondence view of truth — hold that there are good historical reasons to believe that Jesus Christ rose from the dead in space-time history, thus vindicating His divine authority (see Romans 1:4; 1 Corinthians 15:1-11). [4] The Apostle Paul adamantly affirms this view: “And if Christ has not been raised, our preaching is useless and so is your faith. More than that, we are then found to be false witnesses about God, for we have testified about God that he raised Christ from the dead” (1 Corinthians 15:14-15). Without the correspondence view of truth, these resounding affirmations ring hollow. Christianity cannot live and thrive without it.

This is a great article from a very smart guy who has written extensively about truth and postmodernism. Doug also has a blog, in case you want to pay him a visit.