This need for evidence arises because the world is inherently uncertain.
But people who have worked in forecasting say the effort is inherently uncertain.
Budget projections are inherently uncertain and even a small change in one assumption can lead to very large changes in the fiscal outlook over a decade.
The universe is inherently uncertain, and at various times it's essentially flipping coins to make a decision.
McNeill writes that the future is "inherently uncertain" and that "sharp adjustments will be required."
This goes beyond conventional optimization since travel time is inherently uncertain (traffic jams, time of day, etc.).
Such projections are inherently uncertain.
The smaller category of O'Neillian indiscretion arises from his tendency to express certainty about inherently uncertain situations.
This makes listings of cliffs an inherently uncertain endeavor.
Agricultural production is inherently uncertain.