A decrease in variability leads to an increase in what?

According to the SAFe for Teams SP (6.0) - SAFe Practitioner handbook and study guide, a decrease in variability leads to an increase in predictability. Variability is the degree of uncertainty or variation in the outcomes of a process or a system. High variability means that the outcomes are more likely to deviate from the expected or desired results, which makes them harder to plan and control. Low variability means that the outcomes are more consistent and closer to the expected or desired results, which makes them easier to plan and control. Predictability is the ability to forecast or anticipate the outcomes of a process or a system with a high degree of confidence and accuracy. High predictability means that the outcomes are more likely to match the forecasts or expectations, which reduces the risk of failure and increases the value delivery. Low predictability means that the outcomes are more likely to differ from the forecasts or expectations, which increases the risk of failure and decreases the value delivery. Therefore, a decrease in variability leads to an increase in predictability, as the outcomes become more stable and reliable. References: Exam Study Guide: SP (6.0) - SAFe® Practitioner, SAFe® for Teams - Know Your Role on an Agile Team, Assume variability; preserve options - Scaled Agile Framework