The phrase "an unpredictable change" is correct and usable in written English.
You can use it when describing a change that is not expected or cannot be anticipated.
Example: "The weather forecast predicted sunny skies, but we experienced an unpredictable change that brought heavy rain."
Alternatives: "an unforeseen shift" or "an unexpected alteration".
The insurance is the way in which the user can also better handle situations where a sudden unpredictable change in price and demand occurs.
The stop signal was a sudden and unpredictable change of the arrow to red, signalling a deliberate effort to refrain from responding.
The rapid melting of Arctic sea ice might lead to a cascade of unpredictable change as the snow-covered reflective surface is replaced by dark, heat-absorbing water.
Winnacker has pronounced the freeze a "drastic and totally unpredictable change" in the federal government's science policy and has reminded politicians that when the BLK consensus was reached in June, it took into account the generally difficult financial situation.
Whatever else the Arab spring was, it is an extraordinary example of how unpredictable change is and how potent popular power can be.
Environmental turbulence refers to unpredictable change in an industry (see e.g. Melville et al. 2007) induced by high frequency of firm entries and exits as well as high degrees of structural instability (Mithas et al. 2013, p. 517).
I was there to speak at an annual forum on the environment organized by the Asahi Shimbun newspaper.* My talk was "The Daily Planet- An exploration of issues and opportunities arising as both the media and the environment enter a period of unprecedented and unpredictable change".
But in a world characterized by more unpredictable change, simple access has diminishing value.
One possible explanation for this is the occurrence of a "catastrophic" event a major and unpredictable change, such as sudden impairment of mt DNA repair processes (which are believed to be an ancestral trait within Anthozoa (Pont-Kingdon et al. 1998; Shearer et al. 2002; Brockman and McFadden 2012).
"The myths," Lefkowitz writes, "show a world full of evil forces, unpredictable change, difficult conditions, and inevitable death and defeat".
