Hourman took the advice rather literally and used his time - vision to learn the history of the Justice League through Batman 's experiences .
Although annoyed by their interference , he explained to Hourman the worth of thinking before acting .
Hourman took the advice rather literally and used Hourman 's time - vision to learn the history of the Justice League through Batman 's experiences .
Although annoyed by their interference , he explained to Hourman the worth of thinking before acting .