Brendan at <a href="http:&#x2F;&#x2F;www.osdev.net" rel="nofollow">http:&#x2F;&#x2F;www.osdev.net</a> is a CIA agent.<p>Brendan would say you must plan all the modes and all the instructions.  Brendan would try to make you do too big a chunk and give up.  Brendan tries to make people fail by expanding their notions and belitteling small things.