knit•er•a•cy |'nitərəsē, 'nitrə-|

Good for you! Unravelling from the cast-on edge is nearly impossible. In my knit fix class, that's how I teach people to change stuff from the cast-on edge. It's what I did with that entrelac hat, and most knitters are terrified of it. Congratulations on being adventurous, and remember if you want to have that technique conversation, I'm available anytime I'm available. ;)