# Gavin Andresen
# 2010-12-10 13:40:03
# https://bitcointalk.org/index.php?topic=1886.msg28858#msg28858

@s{quotedtext}
@s{quotedtext}
 @p{brk}
Accounts do not affect the previous-transaction-selection algorithm at all; if you sendfrom FOO, bitcoin doesn't make any effort to only use coins that were received by FOO. @p{par}

Think of your wallet as being a big pool of coins.  Coins are not stamped with account names when they go in, instead, there's a little man with a green visor making entries in a ledger. @p{par}

Each receiving address is a pipe that dumps coins into the pool, and the little man knows which pipes are assigned to each account. @p{par}

Every send the little man grabs his shovel and picks a bunch of coins randomly from the pool.  Then debits an account. @p{par}

And for moves, the little man doesn't have to touch the coins in the pool at all, he just adjusts his ledger. @p{brk}