What is Critical Thinking? Is it Important enough to Talk about it?

There are many debates regarding critical thinking and question emerged related to how to build critical thinking and what it is important. Some people ignore talking about it because they thought that 'critical thinking' is just a very simple skill and easy to adapt and learn. It is true at some points but it is not always true.

According to experiences of living and visiting abroad for short period of time, I myself observed that people in developed countries have better thinking compared to those in developing countries. On a particular case, rural Cambodians tend to believe 'what they hear but not what they see'. Most of the time, they have been lured to rumors and some people were also affected by no-evidence-support-saying. Then, what should we do as a development practitionners? If many development practitioners keep ignoring this fact, one day their development program may affect.