I had this dream this morning where I was visiting someone on a bike. I had to lock it up with one of those combo locks because the area was rough and there was a person standing nearby that I had apparently had a history with, enough to make her want to steal my bike the moment my back was turned.
I had used this lock before but it had been a while so I wasn't sure of the combination. I looked at the numbers already on there and tried to memorise them knowing that the moment I locked it up those numbers would be scrambled and I'd be screwed if I forgot them. To make matters worse it was a 7 digit code, a lot of numbers to remember. I got a piece of scrap paper out of my bag an rummaged for something to write with which turned out to be a colour marker, the colour being "coffee with milk"
So I write down these numbers, watery coffee looking numbers and I lock my bike and I go inside.
Then I wake up and realise where those numbers came from and why they're so important: they're DC's fed ex account number which I use all the time to send pages out.
And then I remembered an issue of Planetary I'd read a few months back where the lead character uses this special code to activate some vault or weapon or something: the same number only the one and zeros were removed.
So, sacred mathematics or the result of deadline pressures seeping into the subconscious of the artistic mind?