The direct connection of happiness depends on the _________ of thinking.

According to the author, which area of Artificial Intelligence (AI) is highly sensitive?

Read the following passage and answer the question given below: In the category of sorrow, the position occupied by 'fear' is the same as the position occupied by 'enthusiasm' in the category of joy. In fear, we become specially sorrowful due to the certainty of a presented difficult situation and sometimes we even try to keep ourselves away from that situation. In enthusiasm, we certainly become proactive in the thrill of the presented action-pleasure through the determination of an opportunity for courage within the upcoming difficult situation. In enthusiasm, along with the fortitude to bear pain or loss, there is a combination of joy in engaging in action. The name for the thrill of courageous joy is enthusiasm. Devotees of action-beauty are called truly enthusiastic. All those actions which require courage to bear any kind of pain or loss, the eager joy towards them is included under enthusiasm. According to the type of pain or loss, there are also types of enthusiasm. From this point of view, literary theorists have classified types like Yuddhavira (war hero), Danavira (charity hero), Dayavira (kindness hero), etc. Among these, the oldest and foremost is Yuddhavira (war heroism), in which there is no concern for the end of life, pain, or even death. The purpose of this type of heroism has been continuous since very ancient times, in which both courage and effort reach their ultimate climax. The form of enthusiasm does not manifest itself merely in the courage to bear pain or suffering. It requires the addition of joyful effort or its eagerness. Being ready to get a huge boil lanced without becoming unconscious will be called courage, but not enthusiasm. Question: Where is the ultimate climax of both courage and effort visible?