What is a permanent magnet? Where does its permanency come from? How does a magnet behave when forced to change its "permanent" magnetization? What is the relationship between structure and ferromagnetic properties? What is hysteresis and what is it useful for? Does a ferromagnet blow-up when it gets to the the critical point? (No) What happens to ferromagnet near the critical point? Can one design an automatic algorithm to find the critical point of a ferromagnetic system? Can one demonstrate hysteresis with purely mechanical means? Can one use theory to bridge between two seemingly...