How do others perceived the time jumps?

In the latest episode of LOST, "This Place is Death," the writers finally answered a question I've been thinking about since the beginning of the series: For the people not jumping through time, living their lives for the first time, how do they perceive the time jumps? The first thing we learn is that these people do not recognize anything is happening. They don't see a flash of light, nor do they hear an ear shattering, high-pitched tone. This became evident during the first jump of the episode when Jin began to writhe in response to the jump while Rousseau did not react. The second thing we learn about is that non-jumpers can actually see the time jumpers go. After the first jump, Rousseau sees Jin again and thinks he's the smoke monster because he randomly disappeared when time skipped. This means that despite the fact that the time jumps are something of a physical paradox (imagine what it's like to see something that you know is you but at the same time isn't) neither history nor the brain makes correct that which should not be. That then means that these events are permanently a part of non-jumpers' life histories. For example, think about the segment of time from when Rousseau first lands on the island to the beginning of season 5 when the time jumps begin. I imagine the first run through time, Jin could not have been present when Rousseau arrived because he had not yet come to the island. Thereafter, however, if you were to follow the progression from Rousseau to Jin back to Rousseau, provided that no one else changes time, Jin will always be present after Rousseau's arrival. I gather that that is how time travel works, at least as presented by LOST.