Judgment
The Well. You can change the village but not the well. It neither decreases nor increases. They come and go and draw from the well. If the rope doesn't reach the water, or the jug breaks, misfortune.
Image
Water over wood: the image of the Well. The superior man encourages people in their work and teaches them how to help each other.
Information Theorem
Claude Shannon - A Mathematical Theory of Communication
Claude Shannon (1948)
In July 1948, Claude Shannon published 'A Mathematical Theory of Communication' in the Bell System Technical Journal, creating information theory and defining the digital age. Before Shannon, 'information' was vague—news, knowledge, meaning. After Shannon, information became measurable in bits. His key insight: separate message from meaning. Information isn't what's said but what could be said. A message carries information proportional to its surprise—complete certainty carries none. Shannon quantified this with entropy: H = -Σ p(x)log₂p(x), measuring degrees of freedom, possible states, the space of what-could-be. From this foundation came compression algorithms, error correction, channel capacity, the bit itself. Hexagram 48 is The Well (井)—water over wood, the inexhaustible source communities draw from without depletion. Shannon created the well the digital world draws from daily: mathematical proof that you can communicate perfectly through imperfect channels by adding right redundancy. Seventy-seven years later, every protocol designer returns to the same source. The well doesn't run dry.
Historical Context
- Period
- Zhou Dynasty
- Oracle Bone Etymology
- Water (☵) sits above, Wood (☴) sits below—water drawn up from wooden well.
- Traditional Use
- The well is the village's inexhaustible source. Dynasties change, villages move, but the well remains. It nourishes everyone who draws from it without being depleted. The classical teaching: maintain the well, keep it clear, and it serves indefinitely.
- Character Analysis
- The character 井 (jǐng) depicts a well—the framework, the walls, the opening. The well's structure makes the water accessible. Without the well-frame, the underground water remains out of reach. This is the principle: the source exists, but useful access requires careful construction.
- Energy State
- Wood growing upward into water—water drawn from depth to surface. The well structure brings the source to those who need it. Yang in the center of the upper trigram shows the true nourishment available.
- Trigram Symbolism
- ☵ Water (Upper) - Depth, source, nourishment ☴ Wood (Lower) - Growth, penetration, upward movement Wood rises to meet water descending—the well's function realized.
Sources
Lines
Line 1: 井泥不食舊井無禽
Line 2: 井谷射鮒甕敝漏
Line 3: 井渫不食為我心惻可用汲王明並受其福
Line 4: 井甃無咎
Line 5: 井洌寒泉食
Line 6: 井收勿幕有孚元吉
Practical Guidance
Transformations
When changing lines appear in a reading, this hexagram can transform into another.
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