5. “That’s a total of twelve callbacks,
which gives you immense power
to react and prepare for each state
in the ActiveRecord life cycle.”
— active_record/callbacks.rb
11. “That’s Ruby, which gives you
immense power to do, you know,
pretty much anything, ever”
— Ernie Miller
12. Google
“Are ActiveRecord Callbacks Any Good?”
“ActiveRecord Callbacks are Unreasonable”
“Rails, callbacks, workers, and the race you
never expected to lose”