Now, most of the time you would never be at 63 F - it would be a hard block. Unless of course you follow my Deconstructed method where I let a portion of the chocolate completely set up overnight. But again, this is to demonstrate a point. So, we have heated the chocolate up past 63 F and look at that - all the type I crystals are gone. Just like magic (or maybe alchemy). Now we raise the temperature a bit more.