This comment caught my attention, because it made me think (whether logically or not) of a Mobius strip, which appears to be the shape in which Jeremiah constructed the car tracks in his room (into an Arch of Time?). . . .
Same here: this freaked me out when I was first shown this when I was about seven years old and at Primary School. If you draw a line on one face and follow this round you come right back to the beginning, so it's a three-dimensional shape with only one face! One interesting aspect I was shown is that if you then carefully cut this shape long-ways down the pencil mark you get two interlocking rings? (Gee - I wonder where you could get hold of two rings - in white gold perhaps?!)
I always imagined the AoT though as, well, an arch shape, something like a big golden rainbow, but then (before I saw the illustrations in Gilden Fire) I used to imagine the Bloodguard as being like the Security Officers (the guys in red jumpers) in early Star Trek episodes... I suspect it's the drugs.
The only way that this could be true is if SRD subscribes to a many-worlds implementation of the Law of Time. Simply put: Every choice (quantum probability) results is a fork of an observed worldline. You can travel to the past and kill your grandfather because your original worldline is fine, you are no longer following it instead you follow the fork where you showed up and killed your grandfather. Free will is preserved, but for the purposes of the story not very interesting as there are a nearly infinite number of universes with various outcomes.
I've already been there! I got shouted down a wee bit; I suspect it gives people headaches!
There's a lot of well established scientific theory surrounding multi-dimensional realities, and it would have been nice if SRD perhaps had even had someone (Linden?) raising at least the possibility in their mind that quantum probabilities would exist? I think if I was about to travel time then it would raise questions in my mind!?
Of course, quantum probabilities are problematical to the story, not least because in at least half of these alternative 'realities' Foul would have won out previously (and the Arch of Time already destroyed?)
The principal problem with this is that I always thought of the AoT as ruling the multiverse, including our own 'reality' - did SRD not mention this somewhere? I always got the impression that the destruction of the AoT would have a detrimental affect on the real world???