Henry Petroski
Henry Petroski

An over-reliance on past successes is a sure blueprint for future failures.

Henry Petroski
Henry Petroski

I'm a firm believer that no matter how small an object is, you can find interesting things out about it and its history.

Henry Petroski
Henry Petroski

Any design, whether it's for a ship or an airplane, must be done in anticipation of potential failures.

Henry Petroski
Henry Petroski

Successful design is not the achievement of perfection but the minimization and accommodation of imperfection.

Henry Petroski
Henry Petroski

It seems to be a law of design that for every advantage introduced through redesign, there is an accompanying unintended disadvantage.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

Design is nothing if not decision making.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

It is really want, rather than need, that drives the process of technological evolution.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

Read and write with a sensitive ear. The craft of writing is very important. Practice the craft.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

You can almost say that a design error is a human error because, after all, it's we humans who do the designing.

Henry Petroski
Henry Petroski

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.

Henry Petroski
Henry Petroski

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.