when you send BTC to someone elses adress... it comes out of your money pool on that wallet... not an individual adressee.
That's not entirely true. It comes from individual transaction outputs. However, the wallet doesn't let you choose which outputs to spend in the transaction you are creating. The wallet has its own algorithm for determining which previously received outputs to use as inputs.
oh.. ok.. thanks for that
but... in standerd user terms.... what the standerd user will experiance.... is there is one money pool for your wallet that is linked to all your adresses... money comming in or out appears or dissapers from that pool, regardless of adresses used.
that is what the standerd user will experiance... and see.... even if thats not what actualy happens.