How does Miller present the continued role of the past in life?

All My Sons is a play about the past. It is inescapable--but how exactly does it affect the present and shape the future? Can crimes ever be ignored or forgotten? Most of the dialogue involves various characters discovering various secrets about the recent history of the Keller family. Miller shows how these past secrets have affected those who have kept them. The revelation of the secrets is presented as unavoidable--they were going to come out at some point, no matter what, and it is through Miller's manipulation of the catalysts that the truths are all revealed on the same day. Whilte the revelations are unavoidable, so are their fatal consequences.