之前給《明報》的 一篇文章 ,只能算是一篇「報導」,篇幅所限,並沒有太多我的個人意見,現在談一下吧。
是次 blog 的討論,有部份其實已經離開了「門戶之見」的討論,有誰不知道 BSP 不代表一切,人才是中心?道理人人明白,
Hashcash schemes are anattempt to slow down the rate that spammers can send email by makingthem burn CPU time on some non-trivial calculation. This soundssuperficially attractive (and has ever since 1997), but will neverbe adopted; in fact, the idea is dead on arrival.
To see why, we only need to observe that hashcash has a disproportionateeffect on the heaviest senders of email; in fact, this is exactly whatit is designed to do. Now think of what this does
Following up on previous numbers , here area few more (mixed in with some repeated from last time, foreasier comparison):
| Samsung SyncMaster 900NF 19" CRT displaying stuff | 83 watts |
| Dell 1907FP LCD displaying stuff | 26 watts |
Clearly, switching to LCDs can pay off. Bearing in mind that mycomputers seem to idle at around 75 to 90 watts, using a 19" CRT isroughly the equivalent of having a second one running.
Here's