I knew about the Golden Age, but not the Platinum Age.
My ages were the Silver and Bronze.
I thought it was just Gold silver and modern, The way I was told to know the ages is by how superman fights. If superman is doing things like grabbing entire stars and pulling them around, That's Golden age, Limitless Superman, If Superman is leaping tall buildings in a single bound and bulletproof, That's silver age. And if Superman is getting his ass handed to him by doomsday, That's modern age. Like Legit, That's how I was taught to follow the ages. I had never heard of platinum age or bronze age.