Oh, now I see what you mean. Yes, the old PC has the springs in the keyboard. I've taken the keys off to clean underneath a number of times.

I can't imagine this Mac keyboard has springs, though, and still it's pretty clicky and bouncy and stuff. But then, Apple is obsessed with secondary industrial design factors - I read a marvelous article once about how they planned the products - so they may have made the touch experience a priority for the keyboard.