magnum cracked heads

I've seen a LOT and I mean a LOT of people on here say they would run them anyway. Me? No how no way would I run a cast iron head cracked. Cast iron is some funny stuff. It can crack just sittin there. And the thing is, what's to stop it from continuing? Nothing......until and unless it comes to an edge or a hole. Me? Cracked heads would get thrown in the scrap pile.