In this episode, Change Advisory Board draws a straight line from the lodge to the datacenter via the square, exploring how the symbolic working tools of Freemasonry — the gauge, gavel, square, level, plumb, compasses, and trowel — can be reinterpreted as instruments of modern Site Reliability Engineering.
From the Entered Apprentice’s 24-inch gauge to the SRE’s time budgets and service-level objectives, each tool becomes a lens for understanding the moral and operational discipline behind reliable systems. The common gavel’s task of removing rough edges parallels how engineers refine noise from telemetry. The Fellow Craft’s square and level emerge as early templates for data integrity and fairness — the moral geometry of incident response. The plumb rule, once a test of uprightness, becomes the model for aligned observability: systems and people both measured against their true vertical.
Finally, the Master Mason’s compasses and trowel remind us that every great system — like every enduring fraternity — is held together not by code alone but by the invisible cement of trust, accountability, and shared purpose. Observability, in this light, is not just about data; it is the moral act of ensuring that what we build is true, just, and aligned with the architecture of higher principles.
It’s a conversation about craftsmanship in code and in character — an investigation into how the oldest working tools of humanity still guide the newest disciplines of reliability engineering.
Source #1: The Lecture of the Second Degree of Freemasonry
Source #2: Site Reliability Engineering edited by Betsy Beyer, Chris Jones, Jennifer Petoff, and Niall Richard Murphy
