Another way of thinking about it -- if we tossed a coin eight million times, then we'd expect a million head-tail-heads and a million head-tail-tails -- but the head-tail-heads could occur in clumps.
另外一种思考的方法就是-- 如果我们掷八百万次硬币 我们可能会预计有一百万正反正情形 和一百万次正反反情形的出现--但正反正的情形可能接连出现