Weaving is like that. It's a process with discreet steps, and each one must be followed with care and in order. That's the left brain part. But most of those steps are, within themselves, repetitive - one might say meditative. That's the right brain part.
There's a great deal that must be done before warp ever meets weft: measuring the warp, sleying the reed, threading the heddles, beaming on. And before that there's design - color, texture, pattern.