2 Thinking<p>

<a href=2.1.html>2.1 Edward de Bono</a><br>
<a href=2.2.html> 2.2 Creative Thought</a><br>
<a href=2.3.html> 2.3 Vertical Thinking</a><br>
<a href=2.4.html> 2.4 Lateral Thinking</a><br>
<a href=2.5.html> 2.5  Problem Solving</a><br>