I always figured that a write wouldn't change the magnetic field 100%. Say it's 90% effective at changing the magnetic field. There's now four options: 1 overw

I always figured that a write wouldn't change the magnetic field 100%. Say it's 90% effective at changing the magnetic field. There's now four options: 1 overwritten by 0: 10% field strength 0 overwritten by 0: 0% field strength 1 overwritten by 1: 100% field strength 0 overwritten by 1: 90% field strength But I guess that's not quite true.