Context: In its metaphysics, Nyāya school is closer to the Vaiśeṣika school than others. It holds that human suffering results from mistakes/defects produced by activity under wrong knowledge (notions and ignorance). Moksha (liberation), it states, is gained through right knowledge. This premise led Nyāya to concern itself with epistemology, that is the reliable means to gain correct knowledge and to remove wrong notions. False knowledge is not merely ignorance to Naiyayikas, it includes delusion. Correct knowledge is discovering and overcoming one's delusions, and understanding true nature of soul, self and reality. The Nyāya Sūtras begin:

Question: What school of thought is closest to Vaisesika school?
Answer: Nyāya

Question: What does Nyaya say causes human suffering?
Answer: mistakes/defects

Question: What state is achieved through knowledge?
Answer: Moksha

Question: What is moksha in Hindu philosophy?
Answer: liberation

Question: Besides ignorance, what does false knowledge include in Nyaya?
Answer: delusion

Question: What school is Nyaya most dissimilar to?
Answer: Unanswerable

Question: What is Nyaya uninterested in?
Answer: Unanswerable

Question: What are practitioners of Vaisesika called?
Answer: Unanswerable

Question: What is merely ignorance in Nyaya?
Answer: Unanswerable

Question: What philosophy produces human suffering?
Answer: Unanswerable