Dude don't be such a cynic. You can use a paper based ledger system as a backup to the paper scraps. Meanwhile all the group members can sell their academiccoin paper scraps for dollars and perform their group dealings using the greenbacks as a sort of proxy. This has the immediate advantage of allowing you to store your currency in bank accounts and buy newspapers and gum. Then when you run out of smokes and beer for example you can just issue some academiccoin2s to yourself and repeat the process.