Although it has appeared for a long time, but recently, critical thinking has been really interested in Vietnam. It is also a "fatal" weakness that many people have. In a nutshell, when you don't have critical thinking, you work like a machine, you listen like a robot. The boss says whatever you do. During a discussion, you just listen to the opinions of others, then follow without your own stance or opinion.
In the era of the Industrial Revolution 4.0, you cannot be like a machine. You must have your own ideas, opinions, thoughts, and creativity.
To understand simply, you must have a questioning, contributing, critical thinking (contradicting) what you think may be different, maybe there is a different solution.
The practice of critical thinking is extremely necessary, because thanks to critical thinking, you will form a habit, know how to approach a multi-dimensional and flexible problem; capable of observing, analyzing and seeing thoroughly, thereby being easy to adapt to any changes in life or work.