@Override
	public void update(Observable obs, Object packet) {
		// TODO Auto-generated method stub
		String text = "";
		if (obs.equals(gs.pc)) {
			if (packet instanceof ChangePacket) {
				text = buildText((ChangePacket) packet);
			} else {
				text = "\nYou earned 1 bit.";
			}

		}
		ep.setText(ep.getText() + text);
	}