What is a paradox?
One basic definition refers to the paradox as “a statement or suggestion, which seems absurd or has an internal – conflict, but still reflects the truth” (The American College Dictionary).
Geifman (1983) notes that paradoxes contradict a concept, that basic is logical, but constitutes an obstacle to an intuitive grasp – a direct reality.
According to Jimenez (1976) paradoxes transfer ideas indirectly so that they contradict stereotypical thinking

Paradoxes appear in logic, epistemology and technology of computers. An example of an ancient semantic paradox is the “Liar Paradox”. This paradox appears in the New Testament in Paul’s letter to Titus. The letter tells of the prophet Aphimanedes from Crete who said that all of Crete are, liars and cheaters. Because he himself  is from the island of Crete, then he is also a liar. So, his remarks on the people of Crete and himself are not true. The conclusion is that people of Crete and he himself, are liars, etc. …
Geifman (1983) describes a two-step process that creates a logical – semantic paradox: The first step is building an object in relation to terms of a given system. The second step is imposing the object to get into the system. This way a paradox is created by applying the same attitude on the object as to all the terms of the system. In terms of the presented paradox; the speaker, the man from Crete, is the object in relation to the group of people from Crete. On the next step we put in the man of Crete to the same group of the people from Crete who are liars. So is the paradox created. Coercion is expressed by the inserted phrase “people of Crete are liars”  into the language as a system in which every sentence is true or false.

Our need to think causally, to analyze and consider things logically, ultimately creates the paradox. This is a typical model of logical-semantic paradoxes. Many problems in life are created in the wake of a logical analysis errors