I just think if it's above average now or below average now that's all that matters whether we put in a 30-year average or a 50 or average or a 10 year average. Today, is it warmer or colder than average. I don't think there's a need to compare to the past as the environment is always changing through history and will continue to do so, so one inherently knows it's going to be different for various reasons. I know a colder than average temperature today is not going to be colder than average during the ice age, and likely would be way below average during the formation of the Earth.
Can't live in the past man. The past is gone.