What is thesis antithesis synthesis?

The triad thesis antithesis synthesis is a philosophical framework often used to describe the thought of German philosopher Georg Wilhelm Friedrich Hegel, although Hegel never used the term himself; he triad was actually developed earlier by Johann Fichte.

The thesis introduces a point or proposition.
The antithesis contradicts it; it is a reaction to the proposition.
The synthesis resolves the conflict between the two by integrating elements from both sides into a new proposition.

This progression of ideas leads to a higher level of understanding or insight.