This is the article format. It is deliberately quieter than the homepage so long-form writing is actually pleasant to read instead of glowing at the reader like an arcade cabinet demanding quarters.
The original assumption
Use this area for the original design reasoning, what loads you expected, and why the first approach initially seemed acceptable.
What changed
Explain the observation, measurement, constraint, or practical problem that forced the design change.
DESIGN RULE
A good build log records the reason behind a change, not merely the fact that something changed.
The revised design
Document the new structure, how the load path improved, what weight or complexity it added, and what tradeoffs you accepted.
What I would do next time
This is the part Future Mat will care about most.