?: (n) The goal that you aim for, not because you expect to hit it, but because aiming for it points you in the right direction.Julian Browne in The Death of Architecture accepts that while an Enterprise Architecture will never be achieved, it can direct our efforts: "Great ideas and plans are what inspires and guides people to focus on making those tactical changes well."
Having a plan is good. Sticking religiously to the plan is bad. The business is constantly changing, and so the architecture should align with the current status and the latest goals. Architecture is a map, but we operate in Street View. The map is always out of date.
So it is in life. As people we are constantly changing. There are objectives to shoot for, some concrete and achievable, others unrealistic but worth trying. Aim for enlightenment, if you like, but redefine what enlightenment means with each learning. Embrace change, and direct it by choosing where to focus your attention. If our goal is readable code, we're never going to transform our entire legacy codebase to our current coding standards. Our coding standards will have changed by then. Instead, as we modify pieces of the code, we make these parts the best they can be according to the direction we've set.