The idea was that instead of dividing the physical SD of a Safecoin, it would instead be divided by exchanging Safecoin’s for smaller value units of physical SD. For example, one dollar is exchanged for one hundred cents. This way the cap would stay at 4.3 billion and Safecoin could be divided infinitely as long as new units of physical SD of smaller value are introduced. Of course there could only be 4.3 billion Safecoin’s worth of any coin at any given time.
I hope I got this right. Please correct me if I’m mistaken.