A Quote by Donald Knuth
Programmers waste enormous amounts of time thinking about, or worrying about, the speed of noncritical parts of their programs, and these attempts at efficiency actually have a strong negative impact when debugging and maintenance are considered. We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%.
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We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil. Yet we should not pass up our opportunities in that critical 3%
We should forget about small efficiencies, say about 97% of the time: premature optimization is the root of all evil.
Everyone by now presumably knows about the danger of premature optimization. I think we should be just as worried about premature design - designing too early what a program should do.
If you want more effective programmers, you will discover that they should not waste their time debugging, they should not introduce the bugs to start with.
I get anxious about a lot of things, that's the trouble. I get anxious about everything. I just can't stop thinking about things all the time. And here's the really destructive part - it's always retrospective. I waste time thinking of what I should have said or done.
There's no point thinking about dying, because it's going to happen anyway, isn't it? I don't waste my time worrying about that.
I spent so much of my time when I was growing up just worrying about what people thought of me, about my appearance, how I should act in school, how to... be popular and all that rubbish. Stop worrying about everything. Everything's going to be okay.
Now I feel and I say all the time that vanity is, like, long gone. I'm really free of worrying about what I look like, because it's out of my shaky hands. I don't control it. So why would I waste one second of my life worrying about it?
The thing about writing or making art is that I'm not thinking about that stuff while I'm doing it. Like the driver's ed kid, in retrospect I see that that was meaningful, and I felt close to him in that way, but at the time I just thought it was fun to draw, and that's all it was. I think that's what's weird about life and about making art. You have to talk about it later. I guess I should be prepared to talk about it now. That is why I'm here. But again, pass.
I can't stay mad very long. I get grumpy when I read a bad review. I say, 'How could he say that about my music?' Then I forget about it. If I got mad every time somebody wrote something negative about me, I'd be exploding all the time. I'd be burned out just from reading reviews.
Just as important as getting enough sleep is thinking about sleep in the right way. Stop thinking of sleep and naps as “downtime” or as a “waste of time.” Think of them as opportunities for memory consolidation and enhancing the brain circuits that help skill learning. Nor should you feel guilty about sleep. It's just as crucial a part of successful brain work as the actual task itself.
I saw one of the absolute truths of this world: each person is worrying about himself; no one is worrying about you. He or she is worrying about whether you like him, not whether he likes you. He is worrying about whether he looks prepossessing, not whether you are dressed correctly. He is worrying about whether he appears poised, not whether you are. He is worrying about whether you think well of him, not whether he thinks well of you. The way to be yourself ... is to forget yourself.
How do you give smart, accomplished, ambitious women the same opportunities as men to reach their goals? What about universal preschool and after-school programs? What about changing the corporate mind-set about the time commitment it takes to move up the ladder? What about having more husbands step up and take the major load?
Premature optimization is the root of all evil.
Be ruthless in one important area: Yourself. Be ruthless about your commitment to Christ. Be ruthless about your intellectual growth. Be ruthless about finishing well. One of the biggest areas we should be ruthless about is our time. How much time do you spend complaining about your problems to people who can't help you solve them? How much time do you talk when you should be doing? When it comes to others, be gracious. But when it comes to you and your time, be ruthless.
Premature optimization is the root of all evil in programming.
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