Think about the last time you crammed one more thing into an already bulging backpack. You tugged the zipper, held your breath, and prayed it wouldn’t explode. That prayer? That was your gut checking the Factor of Safety.
You knew the zipper could handle your laptop, but you added a water bottle, a lunch box, and a small rock you found on the sidewalk. You were testing the real-world load against the theoretical limit. You were hoping the safety margin was big enough to cover your over-ambitious packing.
When that zipper holds, you’ve just experienced a Factor of Safety greater than one. When it rips open and your stuff rolls down the hallway, you’ve hit a safety factor of exactly zero. And you’re late for class.
