There is something HR can learn from science. Even if you aren’t a scientist at all, there is a large chance you understand what science entails. In short, the ability to recreate an experiment and get the same outcome.
Rather than a massive rollout of a new approach or solution, start small. Very small. One individual, a couple, a group, a team, a department.
People are incredibly diverse. Without knowing precisely what you’re measuring, why bother? Luck isn’t a good strategy, is it?
Launch new HR initiatives on a small scale. Evaluate and then increase the size of the rollout.