- Good
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- Nov 07, 2020
Henry Petroski Quotes
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- Last Updated on May 30, 2021
- Emphasize
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- Nov 07, 2020
I emphasize that virtually every engineering calculation is ultimately a failure calculation, because without a failure criterion against which to measure the calculated result, it is a meaningless number.
- Failure
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- Nov 07, 2020
I employ case studies of failure into my courses, emphasizing that they teach us much more than studies of success. It is not that success stories cannot serve as models of good design or as exemplars of creative engineering. They can do that, but they cannot teach us how close to failure they are.
- Failure
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- Nov 07, 2020
Case studies of failure should be made a part of the vocabulary of every engineer so that he or she can recall or recite them when something in a new design or design process is suggestive of what went wrong in the case study.
- Design
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- Nov 07, 2020
Any design, whether it's for a ship or an airplane, must be done in anticipation of potential failures.
- Hard
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- Nov 07, 2020
There's so much written about the Titanic, and it's hard to separate what's fact and what's fiction. My understanding is that the way the Titanic was designed, the emphasis was placed on surviving a head-on collision.
- Future
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- Nov 07, 2020
The paradox is that when we model future designs on past successes, we are inviting failure down the line; when we take into account past failures and anticipate potential new ways in which failure can occur, we are more likely to produce successful designs.
- Look
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- Nov 07, 2020
I relax by looking at things and reading about things. Even the simplest thing can reveal a great deal about the world around us. It relaxes me greatly to sit back with my feet up and look around my study at the everyday things that surround me.
- History
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- Nov 07, 2020
I was always told that I was good in mathematics, and I guess my grades and standardized test scores supported that. My worst subjects were those that generally involved a lot of reading - English and history. So, having good test scores in math and mediocre ones in reading, I was naturally advised to major in engineering in college.
- History
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- Nov 07, 2020
I'm a firm believer that no matter how small an object is, you can find interesting things out about it and its history.
- Important
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- Nov 07, 2020
Read and write with a sensitive ear. The craft of writing is very important. Practice the craft.
- Experience
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- Nov 07, 2020
Indeed, an engineer designing a structure is not unlike an artist painting one. Both start with nothing but talent, experience, and inspiration. The fresh piece of paper on the drawing board is as blank as the newly stretched piece of canvas.
- Blame
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- Nov 07, 2020
We can't simply blame the engineers when things go wrong because, no matter how well they plan, things don't always go according to plan.
- Leave
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- Nov 07, 2020
We call the fates of the Titanic and the Concordia - as well as those of the space shuttles Challenger and Columbia - 'accidents.' Foreseeing such undesirable events is what engineers are expected to do. However, design trade-offs leave technological systems open to failings once predicted, but later forgotten.
- Dock
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- Nov 07, 2020
Companies selling a product play down its vulnerability and emphasize its robustness. But only after technology leaves the dock is it really tested. For human operators in control of a supposedly infallible system, complacency and overconfidence can take over, and caution may be thrown to the wind.
- First Place
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- Nov 07, 2020
Typically, highway bridges have about 50 years. But over in England, they have iron bridges approaching 250 years. In France, there are Roman aqueducts that are approaching 2,000 years old. So a bridge can last a very long time if it's built properly in the first place and then maintained properly.
- People
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- Nov 07, 2020
Failures are much more dramatic than successes, and people like drama. I think this is why automobile races draw such crowds. People expect spectacular crashes, which we tend to find more interesting than cars just racing around the track. The same is true of bridges, buildings, or any structure or machine.
- Creative
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- Nov 07, 2020
Everything we do is designed, whether we're producing a magazine, a website, or a bridge. Design is really the creative invention that designs everything.
- Nov 07, 2020
You can almost say that a design error is a human error because, after all, it's we humans who do the designing.
- Long
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- Nov 07, 2020
For as long as I can remember, I have been fascinated by things large and small. I wanted to know what made my watch tick, my radio play, and my house stand. I wanted to know who invented the bottle cap and who designed the bridge. I guess from early on I wanted to be an engineer.
- Doing
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- Nov 07, 2020
My first book, 'To Engineer Is Human,' was prompted by nonengineer friends asking me why so many technological accidents and failures were occurring. If engineers knew what they were doing, why did bridges and buildings fall down? It was a question that I had often asked myself, and I had no easy answer.
- Long
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- Nov 07, 2020
As long as there are things to wonder about, there are stories to be written about them. That makes me happy, because writing about things seems to be my thing.
- Life
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- Nov 07, 2020
The definition of 'safe' is not strictly an engineering term; it's a societal term. Does it mean absolutely no loss of life? Does it mean absolutely no contamination with radiation? What exactly does 'safe' mean?
- Day
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- Nov 07, 2020
If I could go upstairs and write every day, I would be happy. I don't need recreation.
- Enough
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- Nov 07, 2020
It has been said, by engineers themselves, that given enough money, they can accomplish virtually anything: send men to the moon, dig a tunnel under the English Channel. There's no reason they couldn't likewise devise ways to protect infrastructure from the worst hurricanes, earthquakes and other calamities, natural and manmade.
- Change The World
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- Nov 07, 2020
As engineers, we were going to be in a position to change the world - not just study it.
- Always
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- Nov 07, 2020
Although engineers want always to make everything better, they cannot make anything perfect. This basic characteristic flaw of the products of the profession's practitioners is what drives change and makes achievement a process rather than simply a goal.
- Failure
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- Nov 07, 2020
Relying on nothing but scientific knowledge to produce an engineering solution is to invite frustration at best and failure at worst.
- Need
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- Nov 07, 2020
It is really want, rather than need, that drives the process of technological evolution.
- Luxury
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- Nov 07, 2020
Luxury, not necessity, is the mother of invention. Every artifact is somewhat wanting in its function, and that is what drives its evolution.
- Matter
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- Nov 07, 2020
No design, no matter how common or seemingly insignificant, is without its adamant critics as well as its ardent admirers.
- Important
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- Nov 07, 2020
Because every design must satisfy competing objectives, there necessarily has to be compromise among, if not the complete exclusion of, some of those objectives, in order to meet what are considered the more important of them.
- Design
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- Nov 07, 2020
Design is nothing if not decision making.
- Knowledge
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- Nov 07, 2020
The space shuttle was designed, at least in part, to broaden our knowledge of the universe. To scientists, the vehicle was a tool; to engineers, it was their creation.
- Mind
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- Nov 07, 2020
A common misconception about how things such as space shuttles come to be is that engineers simply apply the theories and equations of science. But this cannot be done until the new thing-to-be is conceived in the engineer's mind's eye. Rather than following from science, engineered things lead it.
- Doing
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- Nov 07, 2020
The same aspirations to celebrate and uplift the spirit that drove the Egyptians to build the pyramids are still driving us. The things we're doing differ only in magnitude.
- Little Things
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- Nov 07, 2020
Many of the familiar little things that we use every day have typically evolved over a period of time to a state of familiarity. They balance form and function, elegance and economy, success and failure in ways that are not only acceptable, but also admirable.
- Advantage
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- Nov 07, 2020
It seems to be a law of design that for every advantage introduced through redesign, there is an accompanying unintended disadvantage.
- Fashion
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- Nov 07, 2020
Too much redesign has to do more with fad and fashion than with fitness and function. It is change for the sake of change. Such redesign is not only unnecessary, it is all too often also retrogressive, leading to things that work less effectively than those they were designed to replace.
- Achievement
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- Nov 07, 2020
Successful design is not the achievement of perfection but the minimization and accommodation of imperfection.
- Change The World
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- Nov 07, 2020
Many new technologies come with a promise to change the world, but the world refuses to cooperate.
- Next
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- Nov 07, 2020