In our lives, we do not consider the importance of philosophy any more than scientific studies and discoveries. One of the common criticisms of philosophy is that it is not practical, meaning that the study of philosophy does not require students to learn anything useful. Moreover, philosophy differs from science because it includes the study of more than what is empirical, or physically observable. However, there are areas in which philosophy can immediately be practical.Philosophy is the process of understanding, a study to know reality, knowledge, and existence. Philosophy is not simply a theory of something. Every person does not have his or her own “Philosophy”. Philosophy is an activity of thought. Philosophy is not a “Way of Life” but rather a “Way of Thinking”. A philosopher gives philosophic thought, not a philosophy. Philosophy is a thought which is critical and comprehensive (analytic and synthetic, practical and theoretical, logical and empirical). Philosophical questions such as, “Should I do my homework right now?” and “Should I go to the party?” take place anywhere in the world and we solve by immanent skills (metaphysics, knowledge theory, logic). Many people say philosophy is more of a theoretical study than a practical study. However, practical philosophy is applied every day in life. Practical philosophy seems potentially more useful to society, due to those ideas and advocacy may result in a more ethical global world. There are countless applications of philosophy in life. Philosophers have divided the timeless subject, philosophy into several major branches including ethics (study of morality), logic (study of reasoning), Epistemology (study of belief and knowledge), and aesthetics (study of the nature beauty).One of the recent practical applications of philosophy, being an issue in modern days, is the Artificial Intelligence, also known as the AI. How is AI related to philosophy? AI is required to learn how to think, which is what philosophy is about. AI uses computers to solve problems that call for human reasoning. AI is based on several scientific and philosophical presuppositions. The outstanding feature of AI is the ability to learn and educate itself from its experience without being further programmed. This ability is called “Experiential Learning” possessed by Aristotle in his book, Nicomachean Ethics. Experiential learning is the process of learning through experience. Likewise, the ability of experiential learning is applied to AI, meaning that it has its own reasoning ability created through branches of philosophy such as metaphysics, knowledge theory, and logic. Experiential learning in AI is fairly simple. Whenever the computer performs a task and ends with a success, the value of this performance might rise. On the other hand, ending up a task with a failure, the value of the performance may drop. These variable values appear for the computer’s memory, which allows the AI to make better choice in the future in similar situations.Suppose that there is an AI robot with a task of escaping the maze. Without any knowledge or experience about the whole new maze, the robot would begin to do literally anything on purpose to gain experience and use its experiential learning skills. For instance, if the AI robot performs “move forward”, and successful approach to the finish, the robot would immediately give “+1 point” to the value of the performance. Similarly, if the AI robot does “turn left”, and ends up facing a wall, the robot, of course, will give “-1 point” to the value of the performance. Such skill like this is an example of experiential learning. The AI’s experiential learning program is similar to human brains. Both humans and AIs apply logic, as it is potential for making the intelligent thinking process, which requires what philosophers call, the “Logical Reasoning Ability”.Who would be more likely to get hired for an employment; Person A with critical thinking skills and reasoning ability or Person B without any philosophical ability, unlike Person A. It would be skeptical if an employer hired an employee with lack of skills like Person B. Having acquired a good logical reasoning ability, the following skills are acquired as well: Argument skills, communication skills, information management, design and planning skills, research and investigation skills, and management and administration skills. The skills listed are essential for a person to become a better manager, consumer, writer, reader, voter, leader, father or mother, and brother or sister. Any moment in life, where one has to make a decision about something, that decision will depend on the reasoning ability. As with the logical reasoning ability being vital in our everyday life, Critical Thinking takes place in the center of philosophy. Defined by Francis Bacon (1605), Critical Thinking is to desire seek, patience to doubt, fondness to meditate, slowness to assert, readiness to consider, carefulness to dispose and set in order; and hatred for every kind of imposture. Simply, Critical Thinking is the ability to analyze the way you think and present evidence for one’s ideas, rather than accepting one’s personal reasoning as sufficient proof. Critical Thinking is being crucial for future development of the world, in terms of fourth industrial revolution, including artificial intelligence, robotics, nanotechnology, 3D printing, and genetics and biotechnology. Therefore, philosophical areas and abilities such as the reasoning ability and Critical Thinking are very influential to the society right now, changing the shape and views of the world.Philosophers are not only concerned with what the world is like, but also concerned with how we should live the world. Again, philosophy differs from science. Philosophy requires the examination of data and evidence that is already available, in order to put into a reasonable and clear perspective, rather than to seek new data. Philosophy is very basic yet vital, being the starting point of all thinking. Practical applications of philosophy exist in various areas such as the Artificial Intelligence. Developments are taking place in the world, using the study of philosophy. Yet philosophy seems to have a minimal presence, it is crucial for every area in life and is the bases of the fundamental nature.