Dr. Robert Sweeney:

We have to look at everything. It is important to project over the next ten years, but I would add the caveat that the longer one goes out, the more uncertainty there is around one's projections. Lawrence Summers, an economist and former Secretary of the US Treasury, published a paper in 2020 or 2021 in which he expressed the view that beyond a decade, projections should be taken with a pinch of salt and many economists would agree. The next five years are important, as are the five years after that. However, it must be borne in mind that there is less certainty as the horizon moves further out.