Every building is recorded on construction documents. Every construction document emerges from a process of design development. Every development sprouts from a schematic design. Every schematic design emerges from a concept. Every concept begins with a sketch. Every sketch is etched on a scrap. Every scrap has the potential to change everything.

Note on the spine hexagram:

Hexagram 63 is named 既濟 (chì chì), “After Completion”.  Its inner trigram is ☲ (離 lí) the clinging, fire.  Its outer trigram is ☵ (坎 kǎn) the abysmal, water.

Hexagram 64 is named 未濟 (wèi chì), “Before Completion”.  Its inner trigram is ☵ (坎 kǎn) the abysmal, water.  Its outer trigram is ☲ (離 lí) the clinging, fire.