Scientific discoveries during the 20th Century demonstrated that uncertainty is inherent in nature. These discoveries led to a change in worldview. Determinism was no longer the received view.

The Einsteinian paradigm regards time as a fourth dimension of space. Of note, Aristotle argued that, without change, there is no time. So, it would seem, that time may be regarded as both a dimension of space and a dimension of change.

In classical physics, the order of accuracy is a measure of uncertainty. In behavioural statistics, the confidence interval is also a measure of uncertainty. In quantum mechanics, the location of a quantum object may be highly uncertain, leading to the notion of "infinite uncertainty". Is this a fifth dimension of space?

Coming to terms with uncertainty has practical implications.

In strategic planning, in managing change, in managing risk and in forecasting the future, uncertainty is a common factor. In business, competence in coping with uncertainty offers a competitive advantage.

From just these few observations, it is apparent that measures of uncertainty are being used, along with the other four dimensions, to describe phenomena and to conduct human affairs. So it could be argued that uncertainty is being used as a fifth dimension in each case.

What is a dimension? It is a measurement devise, not an alternative universe, or multiverse if you prefer.

For uncertainty to gain acceptance as the fifth dimension, of equivalent status to space and time, it needs a simple form of measurement. Although the mathematics of probability are well advanced, probability is not the simplest measure. That mantle goes to possibility. In any given situation, as possibilities increase, uncertainty increases in direct relation. With some qualifications, acquiring information about possibilities tends to reduce uncertainty. So, information may act as an inverse measure. It may also help in the assessment of probability.

Proposition

Accepting uncertainty as a ubiquitous fifth dimension, ostensibly a dimension of change, raises the proposition of a paradigm shift from four-dimensional space-time to

five-dimensional space-change!