Life is not long enough to learn long - term investing because there aren't sufficient data points of feedback to learn from, so you have to learn by observing others. (equitymaster.com)
The guidelines will stop short of regulating design, because the government lacks sufficient data on the topic to determine design criteria. (wardsauto.com)
The base period should be long enough to provide sufficient data for statistical analyses — we choose 30 y, consistent with the period used by most weather and climate services. (pnas.org)