The talk explores Case 68 from Zen teachings, focusing on the intricate relationship between perception, the concept of externality, and the realization of emptiness to see Buddha. It discusses how dust represents sense data, and how swinging the sword metaphorically cuts through duality to reveal the Buddha's true nature. The dialogue examines the function and essence of practice, and how one can remain cognizant of both superficial and profound aspects of phenomena simultaneously. The talk concludes by reflecting on divination through action and the non-dual understanding that emerges from the inseparability of function and essence.

Referenced Works and Concepts:
- Heart Sutra: The reference to "no colors" and "no signs" illustrates the teaching of emptiness within the profound understanding of experience, emphasizing that objects lack inherent existence.
- Nagarjuna: His teachings warn against clinging to the view of emptiness as it can lead to incurability, underscoring the importance of non-attachment and understanding of both emptiness and conventional reality.
- Mahayana Buddhism and Bodhisattva Ideal: The talk references the "Mahayana miracle" of bodhisattvas who engage in the world of duality out of deep compassion, despite perceiving beings as lacking inherent existence.
- Dependent Co-arising: Used as a concept to describe the creation and perception of reality, highlighting the interconnectedness of phenomena and the insight necessary to comprehend it fully.
- Koan Practice: Case 68 involves using stories to illustrate the dual nature of swinging the sword—creating and ending dust—and achieving a non-dualistic mindset through this practice.

AI Suggested Title: Cutting Through Duality's Illusion