If you’re younger than 25 then you have to be told.
It's the elders' obligation to preserve our glorious equilibrium where Ohio State either smashes or merely escapes Michigan each November. It's hard to imagine a world unlike the current one, but it existed. Some of us survived, barely. It will never truly be past-tense to us.
Young people are to be forgiven for believing that the Michigan Threat is some antiquated horror story old people tell each other to stay mentally frosty while fighting off dementia’s inevitable advance. It's a dead era to them. They have to be told, and we have to tell them.