We spend a lot of time memorializing the past. Celebrating lives, successes and remembering what has gone before. In many cases remembering helps us avoid the mistakes of the past. The problem is that the many ideas and innovations of the past were one time events or were built on attitudes and behaviors that changed. The Internet will not be invented again and the idea that the world is really flat is not going gain traction again. Holding on to ideas and attitudes based on outdated premises will rob you and your organization of value.
Remember and learn from the past but recognize that the past is just that, past. New ideas might need to be shaped by the past but ultimately the constraints applied must reflect the world as it is today and will be tomorrow.