SRE has got to be one of the organisations that have done the most damage in the big G. They were given a license to mandate things based on philosophical musings backed with no science, and they can decide what's best and should be done without any data, just based on feels. They also have a culture of misanthropy, patronization and contempt towards devs. From what I can tell anyway.
> they can decide what's best and should be done without any data, just based on feels.
The book is exactly the opposite of this. The Principles chapter alone talk about many things that involve actually dealing with numbers (SLO, measuring complexity, etc).
Be google SRE. Elite software engineer. Cool under pressure.
Pager goes off! Grab pixel. Press finger print reader until it lets me enter my passcode. Ack page. Put down whisky. Shake self. 5 minutes to be logged in and dealing with the problem.
Check alert, see playbook, ignore playbook. Check which cell the problem is in. Correlate with rollouts. See a match. Roll back poorly tested dev promo project. Charts recover. Alert not firing.