5.4 Steady State
Roget’s Thesaurus (3rd ed.) offers the following definition for the word fiddling: “To handle something idly, ignorantly, or destructively.” It offers helpful synonyms such as fool, meddle, tamper, tinker, and monkey. Fiddling is often followed by the “ohnosecond”: that very short moment in time during which you realize that you have pressed the wrong key and brought down a server, deleted vital data, or otherwise damaged the peace and harmony of stable operations.
Every single time a human touches a server is an opportunity for unforced errors.
It’s best to keep people off of production systems to the greatest extent ...