I have a question regarding the Safecoin , according to the Website , there will be only 4.3 billion coins in circulation at one time .
I would like to understand what "at one time" means exactly  ? Is it like Bitcoin where 21 million coins will ever be created ? or does it mean that If some coins get lost,burned or whatever , more will  be created ?

Another thing , If only people who provide resources will get paid , what would anyone buy the coin as there is no demand ? (unless people who use the network will have to pay coins as well)