Tag Archives: Origins

Logical Gal extols Excluded Middle Law

12 Mar

Excluded Middle

Tools are for the using.  And I was reminded yesterday, listening to a discussion, how helpful the laws of logic can be!

The conversation centered on the origins of the universe.  It seems that everyone has a theory or possible explanation for how our universe came into being or whether it has always existed. So how are we to judge?

First of all, to even hold a rational discussion presupposes that words have meaning.  And when we put words together we make truth claims that are either true or false. We all use and therefore at least implicitly rely on logic, whether we acknowledge it or not.  So to deny the laws that are present is folly.  Humans didn’t INVENT these laws, we simply have discovered them.  They are part of the universe.

rational v. irrational

And if they do NOT exist and if words hold no meaning that we can all agree on, then there is no point ever having ANY conversation.  We just end up sharing gibberish.

Back to the discussion I followed this week.  One man laid out a way of thinking about origins that relied on the Law of Excluded Middle.  This law states that there is no 3rd or middle option given A or nonA.  For example, a woman is either pregnant or NOT pregnant. There is no other possibility.

Regarding origins, the reasoning expounded proceeded this way:

  • The universe either had a beginning or it didn’t.
  • If it did have a beginning (and due to the articulation of the Big Bang Theory, most people accept that the universe is NOT eternal), something caused it or something did not.  
  • (If something did NOT cause the universe to begin, then it had to cause itself.  But that is irrational because then something would have to BE (to cause the universe) and NOT BE at the same time.  And that is impossible because of the Law of Non-Contradiction.

Law of Non-Contradiction

  • If something caused matter, time and space (MTS) to appear, it itself is MTS or it is not.  (If matter, time or space created the universe, then we are stuck with a problem of infinite regress, i.e what caused the PRE-matter, time and space that created the universe)
  • Whatever caused the universe to come into existence is either immaterial or it is nothing.
  • and finally….we are left with the conclusion that what caused the universe has to be immaterial, because nothing cannot create something.

Nothing produces nothing

The man pushing back against this line of thinking balked when pressed by this series of either/ors.  When the Law of Excluded Middle was articulated , all he could repeat was the assertion of a possible 3rd option.  I held my breath, curious to learn something I hadn’t previously considered.  But all he offered was that ONE DAY, scientists might come up with a different explanation.

I am VERY thankful for tools that help me sort out, categorize and think logically through complicated matters.

Question:  How does the Law of Excluded Middle help you?