The tungsten filament in lightbulbs is the little wire piece in the center that heats up so hot that it shoots off light as extra energy, allowing for modern civilization to grow.
It’s extremely thin, usually one-hundredth of an inch thick, and is extremely brittle at room temperature, making it super fragile.
Trust is just like a filament in a lot of ways. It underpins most of modern life, shines light on both things that are working well and things that aren’t, and is easily broken if not cared for.
PS – Happy Lunar New Year!