Even before the Covid-19 crisis, rapid technological change, growing economic interdependence, and mounting political instability had conspired to make the future increasingly murky. Uncertainty was so all-encompassing that to fully capture the dimensions of the problem, researchers had devised elaborate acronyms such as VUCA (volatility, uncertainty, complexity, and ambiguity) and TUNA (turbulent, uncertain, novel, and ambiguous).

https://hbr.org/2020/07/learning-from-the-future#:~:text=The%20practice%20of%20strategic%20foresight,still%20operating%20in%20the%20present