What the log catches that memory cannot
Substitutions are the log's first catch. Products go unavailable mid-project constantly, and replacements arrive described as equivalent. The log turns equivalence into a checkable claim: same size, same finish designation, same performance specification, or a documented, signed-off difference. Without the row, the substitution is discovered installed.
Lead-time collisions are the second. Every row carries a lead time, and reading lead times against the construction calendar exposes the collisions while they are still solvable: the fabricated glass measured too late, the special-order fixture that should have been ordered at signing. The log converts scheduling from the professional's private worry into a shared dashboard.
The sign-off column does the quiet legal work. Recording who confirmed each selection, and when, ends the archaeology that otherwise happens when a finish looks wrong in afternoon light: was this the chosen tone, or a drift? One column answers in seconds what emails answer in hours, and the answer arrives without an argument attached.






