VERTICAL THINKING is based on three fallacies:

1. That the established way of looking at the situation is the only possible way because it is right.

2. That by working logically on the situation, you arrive at the best perception of it.

3. That it does not matter where you starts because if your logic or mathematics is good enough, you will eventually reach the correct answer.

Vertical Thinking preserves established way of things polarises proceeds from one certainty to next fits into boxes breeds arrogance and smudginess

Lateral Thinking recognises dominant polarising ideas search for different way of looking at things relaxation of rigid control of vertical thinking uses chance PO