Some paradoxes

A translation of https://dialoogid2.blogspot.com/2025/09/moned-paradoksid-loodetavasti.html from Estonian

 

Some paradoxes 

Karmo Talts 

 

Let's look at the statement "at least one necessary condition of this statement is false". If this statement is true, then at least one necessary condition of this statement is false and therefore this statement is false. If this statement is false, then all necessary conditions of this statement are true and therefore this statement is true. 

Now let's look at the statement "all sufficient conditions of this statement are false". If this statement is true, then all sufficient conditions of this statement are false and this statement is false. If this statement is false, then at least one sufficient condition of this statement is true and therefore this statement is true.