Thanks for the replies all. It is interesting. I guess I'm still looking at this from a recreational point of view. Back in the day there were divers, and yes I saw this with my own eyes, who would cut a stop short by a min or two due to insufficient gas supply, being impatient, or the need for a cigarette. The computers they were diving would get mad when they got to the boat so they would send them down on a fishing line to "clear" them and make a second or third dive. I didn't see any of them get bent that way but it seemed like a really, really bad idea. These were not students just other people I dove around with. Situations like this were what was going through my mind when I asked the question.
This makes sense when looking at the above scenario.
Now, I'm sure there are holes in my understanding of decompression theory but I thought that once bubbles form, even micro bubbles, they don't dissolve and off gas the way normally dissolved gas in tissue does, hence the long chamber rides for bendy people. Also, can't the micro bubbles act as sort of a nucleus for larger bubbles to form up on?
If that's is correct, it seems that omitting a deco stop or rapid ascents could lead to these micro bubbles, that may be asymptomatic, forming. Now if you start another dive with the micro bubbles in your tissues, wouldn't that, invalidate (for lack of a better word) the model because the computer model assumes no bubbles from the start and tries to keep it that way?
Basically, if you ascend to fast, or bypass a required deco stop you're increasing the chance that you have developed these bubbles that don't react the same way as the gas that's dissolved in the tissues. Does a computer model/algorithm continue to treat the gas/tissue the same or does it assume you've got bubbles and adjust the model for the reabsorption and off gassing of those even though they don't react the way normally dissolved gas does? If not, I see the reason for lock out as the model wouldn't be compatible with formed bubbles already in circulation or in tissues.
Clearly the tech stuff is another world and it's voodoo gets spooky down there.
Thanks for all the replies guys.