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
Imagine this: you click a directory folder in the desktop browser toopen it up, and a popup dialog appears that says:
Opening 'Something'.You can cancel this operationby clicking cancel.(The
is a dialog button, the only one in the dialog.) Quick! What happens when you click the cancel button? Are you cancelingthe annoying popup, or the operation that you wanted to actually do?What is the safe thing to do? Really, I have
Menu
![]()