A facilities designer talking about the need for clear communication:
He handed everyone a piece of paper and asked them to close their eyes. He proceeded to give folding and tearing instructions that everyone was supposed to follow with their eyes closed.
After a minute or so of directions, he asked everyone to open their eyes, unfold their piece of paper and hold it up. Amazingly, everyone in the room had a different-looking snowflake-like design, underscoring his point that just blanket instructions—without clear explanations, demonstrations, and feedback—were not enough to guarantee consistent outcomes.