The song "Don't Know That Much" by Jim Cuddy is a reflection on how others often do not truly understand or know the depth of a person's experiences or emotions. The lyrics suggest that it is important to slow down, let go of one's inhibitions, and not allow others to dictate one's life. The song encourages the listener to close their eyes and embrace the freedom and confidence that comes from not being afraid of what others think. The repeated line "Oh, they don't know that much about us now do they" emphasizes the idea that people often make assumptions or judgments without truly knowing someone's story or circumstances. It implies that others may not have the full understanding or insight into the complexities of our lives. Overall, the song reminds us to stay true to ourselves, not be swayed by the opinions of others, and to embrace the uncertainty and vulnerability that comes with being true to our own emotions and experiences.