Look at the present and then consider the future, never mind about the past, it is gone and there is nothing you can do about that.
Look around your organization. How often do you hear that statement? As an organization the tendency is to do things the way we always done them whether that is the correct way to do them or not. Ford told us the “Quality was job #1” and then they have the reputation on the market as far from it. Honda etc. utilized airbags from Takata and it is costing them widely. These are examples of errors that could have been avoided with the proper effort.
The TLS Continuum tells us that those errors represent the obstacles to the system flow. Those errors are non-value added activities that we inflict on the organization because we believe that is the way we need to do things. And then the customer comes long and demands something entirely different. There is no benefit to the organization to base your solutions on what happened years ago.