My theory is that typing is more of an automatic brain activity (e.g. learned muscle memory) than writing (which involves more brain centers because you have to

My theory is that typing is more of an automatic brain activity (e.g. learned muscle memory) than writing (which involves more brain centers because you have to expend more CPU on recognizing what you wrote). Also, when you type notes, you can edit furiously - while with hand writing, usually (but not always) you need to maintain a 'stack' of what has been said in your head.