I have an idea. It was always blown off that High Charity could not make the trip on it's own and arrive at the time it did. However, let's do a little more thinking on the subject. Who was it that was essentially piloting High Charity? It's our good old buddy Gravemind. What are Graveminds particularily known for? Being biological collections of information on par and above super computers. Now, it isn't known, or at the very least, to me, if Graveminds retain the full knowledge of their previous incarnations. But, even if they don't, who do we know that could bend slipspace around like a balloon animal? Forerunners. Who else had an even higher understanding? Precursor's. And the Flood have the knowledge of both. Now, here comes the drum roll. What have we ever encountered in the Haloverse that has even further confused us about the nature of slipspace? Drum roll please! The Slipspace crystal discovered at Sigma! And who possessed this crystal at the end of all things and kept it aboard High Charity? Why, it would be our good buddy Truth! So, in all the ruckus of High Charity's invasion, Truth and all the other San 'Shyuum cheesed it and left all their shit behind for the Flood to claim. Now, why would our good prophet buddies look for and not only keep a broken crystal and it's fragments? Probably because, even though fractured, there was the possibility of it having some use. So, now that we factor in an intelligence that rivals and outpaces super computers, and knows it's way around not only Forerunner slipspace but Precursor slipspace as well, what do you get? A SOLUTION TO YOUR CANON PROBLEMS! So, here's a couple scenarious about how High Charity showed up when it did. 1. Gravemind used the crystal to warp and tinker with slipspace, because if anything would know how to use that crystal to it's full potential, it would be him, and shunted himself from slipspace into the portal leading to the ark. Picture a railway track. This is the path to the ark. Now picture a train on seperate tracks jumping into the air and hopping onto the first set of tracks for the ride. This was High Charity. 2. Gravemind, knowing things that we don't, possibly could have figured out where the portal led after having found it's entry point. And, rather than shunt himself into the pathway with brute force, used the crystal remnents as a speed booster to augment High Charity's own engines. So, I'll leave off with this. *Ba dum tish*