Wednesday, December 22, 2021

Go Big or Go Home

ationaal Archief, No restrictions, via Wikimedia Commons

As a kid, I loved getting the Scholastic book catalogs. Several times a year, our teacher would hand them out, asking us to return book orders by the next week. I was an avid reader but my parents were not wealthy. I could order books, but was always given a modest limit. I would carefully look through the catalog, calculating how best to spend the money. Occasionally I would blow my entire budget on one large book, and that book was often the Guinness Book of World Records

The book was the largest in the catalog, offering hundreds of pages. I spent hours pouring over the lines of fine-print pages discovering the world’s largest ball of string, the world’s tallest skyscraper, the world’s heaviest twins, the record for the longest fingernails, the fastest human, the tallest human, and more. There were records for all kinds of interesting and crazy things. 

Towpilot, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons
When I was growing up in the midwest United States, we took a family trip where I got to see the tallest building in the world. It was the Sears tower in Chicago, at 108 stories and 442 meters in height. That building is now called the Willis tower; today it ranks as the 23rd tallest building on earth. The tallest as of this writing is the Burj Khalifa in Dubai, at 163 stories and 828 meters in height.

Why are we so fascinated with the largest, fastest, or heaviest? In his blog titled “Hubris”, Tim Fernholz reviews a study by the Danish researcher Bent Flyvbjerg that explores monumental engineering endeavors, concluding that projects costing more than $1 billion almost always go over budget. Flyvbjerg goes on to identify four reasons society pursues large projects even though they cost so much.

  • technological: engineers enjoy building the newest or largest item of its kind
  • political: big public works can enhance the reputation and stature of a politician
  • economic: big projects mean lots of business for construction companies
  • aesthetic:large projects often have a certain artistic appeal

These reasons are good initial explanations for why society pursues massive engineering projects despite their huge costs, costs that almost always surpass expectations. However, they are all superficial symptoms of an underlying cause. The deeper reason is implied by the blog title that Fernholz uses,  “Hubris,” impling that these reasons boil down to the age-old vice of pride. 

Jaidyn345, CC BY-SA 4.0 <https://creativecommons.org/licenses/by-sa/4.0>, via Wikimedia Commons

We are familiar with stories of pride as a significant driver for big projects. Your neighbors that vie to build the largest, boldest Christmas display on the street are often driven by a measure of conceit. Pride at a national level was at stake for Americans in the 1950s. They woke up one morning to learn that the USSR had succeeded in launching Sputnik into orbit: the world’s first artificial satellite. This event drove a wave of scientific and technological development in the US, culminating with the massive engineering project to put the first human on the moon. 

Fernholz also mentions the Biblical story of the Tower of Babel as the paradigmatic symbol of big projects that failed. One of my colleagues at Calvin, professor Gayle Ermer, examines this story in a paper at the 2008 Christian Engineering Education Conference, titled “Lessons from the Tower of Babel”. Considering the tale of Babel, she says “The implication could be drawn from this interpretation that Christians should not be investing a great deal of time and effort in technological accomplishments on a grand scale. While it may be true that over-reliance on technological achievements can detract from trust in God, it is questionable whether this is the primary lesson of the Babel story. “ She goes on to describe a God-honoring approach to technology that does not depend on the size and scale of the technology, but more so on its direction. 

I suspect that big technological projects are often driven by pride, steering the project from the start in a direction that is not God-honoring. However, even if pride drove the initial dream of the big project, that should not prevent Christian engineers from redirecting that purpose so that the project itself is God-honoring. 

Furthermore, pride is not the only reason for pursuing a big technological project. In the name of stewardship of resources, we might seek economies of scale, such as building large wind turbines instead of smaller ones. In pursuing a calling to develop and unfold God’s creation, we might build big. Competition might drive a big project, not because of pride, but in order for a company to survive. Engineers might view a large project as pursuit of their spiritual calling, following Colossians 3:17 “And whatever you do, whether in word or deed, do it all in the name of the Lord Jesus, giving thanks to God the Father through him.”

Should Christians participate in big technology projects? I believe so. However, we should do so with a discerning spirit and a keen sensitivity to avoid pride, working to design and build in a way that honors God and loves our neighbor.


Tuesday, December 7, 2021

Broken Christmas Toys

They could make toys better. They could make them stronger, less prone to wear and damage. They could make them safer, with fewer dangerous small parts and fewer toxic materials. They could perform more comprehensive testing. They could make toys better. But they don’t.

Christmas Presents


Once they have a few Christmas seasons under their belt, most kids learn to politely glance at a card or briefly hold up new clothes they have received to show a modicum of appreciation. Most kids also cannot help but show their true enthusiasm when pulling back the first corner of wrapping paper reveals a toy. The toys immediately become beloved and cherished gifts from the first moment they are revealed. Cards and clothes get stacked in a pile; toys are immediately put to work. The American Girl doll joins a tea party. The bright red Hot Wheels Ferrari races across the floor in the kitchen between the feet of the adults preparing a meal. The watch is strapped to the wrist, where it remains for a solid week. 

Toys Break Easily

When my children were young, it was not unusual during the days and weeks after Christmas for toys to break. Some toys needed repair within minutes of unwrapping, while others lasted many days. A few sturdy stalwarts lasted long enough to be handed down to a sibling. Why weren’t all the toys made that sturdy?  Why were some made of flimsy materials that easily broke in the hands of an industrious four-year-old?  

Toy designers and manufacturers have a choice. They could make better toys. They do not because we told them so. Not in so many words, but the result was the same. We consumers often choose lower price over higher quality. 

Imagine a toy seller who produces two models of the same toy. The first model is made of inexpensive materials, with little attention to durability. Costs are reduced further by slimming down the thickness of each part and minimizing the number of fasteners by using an inexpensive sealing process. The result is a fragile toy that is not easily repairable. The second model is made to last, with high-quality materials. The designer pays attention to likely wear patterns and beefs up the sections where weakness might otherwise lead to breakage. More expensive fasteners are used, enabling the toy to be repaired should any problems occur. 

Despite the contrasting designs, from the outside, the two toys appear somewhat similar. A Christmas shopper in a hurry would not spot the higher quality of the second toy. The only clear and immediately obvious difference is the price. Although a few astute shoppers may notice the difference simply by the heft of the toy, and others may assume that the higher price toy is indeed better, the majority choose the lower cost.

Towards the end of the shopping season, the first model has sold out, yet stacks of the second remain. The implications to the toymaker for next year are clear:  make low-cost toys, even if the quality is poor. 

Why don’t they make toys better?  It isn’t some insidious toy conspiracy. It is because we consumers won’t pay for the higher quality. You get what you pay for. We choose to pay little, so we get little. Our economy generates a huge data set characterizing consumer product preferences. Those purchases tilt the test data heavily toward cheaper. We might intend “cheaper” to be less expensive, but in essence, we have selected “cheaper” In terms of lower quality. You get what you pay for.

Communicating Quality

Whether the product is a toy, microwave, phone, or table, the consumer drives much of the market signal for lower quality.  However, the engineer, manufacturer, marketer, and retailer are not absolved of responsibility in the drive towards lower quality. To choose higher quality, reliability, and safety, the consumer must be able to identify those qualities accurately and quantify them to a reasonable degree. Clear and consistent product communication is not easy to obtain across an industry. However, we have an existing example of strong communication in one particular product industry: packaged food.


In 1990, the US Congress passed the “Nutrition Labeling and Education Act” requiring food products to be labeled with accurate identification of ingredients. The European Union passed similar requirements in 2016. Consistent labels quantifying nutrition enabled consumers to make fair comparisons between foods so that they could purchase the best value for their money. Over time, this information has driven the market so that lower fat, lower sugar, higher nutrition became more common and thus more affordable. It is not a perfect system. We still see unfortunate economic pressures that limit the very poor to rather unhealthy food choices. Nevertheless, accurate labeling has improved the overall food production system.  

We should apply the lesson of food labeling to technological products in general. Christians should be particularly eager to improve the way product information communicates safety and reliability because such information is a way to love and care for our neighbor. Christian engineers in a position to influence regulation can advocate for better consumer choice.

Furthermore, regulation is not the only way to improve communication of a product’s quality, reliability, safety, utility.  Reviews can help. Customer reviews are a good start, though they rarely provide a direct comparison of alternatives. Review articles by qualified people or organizations are better, as they often benchmark similar products head-to-head. 

Every Technological Design Requires Trade-offs

Toys are not the only technological products that require give-and-take design choices. Every physical device we design and manufacture requires a trade-off between cost and reliability. Extra design time to develop clever products that last longer implicitly adds cost. Extra or better materials to make structures stronger implicitly add cost.  Furthermore, balancing cost and reliability is just one trade-off. Trade-offs are implicit in every engineering design, requiring an equilibrium between multiple goals that each appear to be good, yet more of the one requires less of the other. 

Most designs will require an array of trade-offs. We trade weight (and indirectly safety) for higher gas mileage in automobiles. We trade early access for thoroughness of clinical testing in developing pharmaceutical drugs. We determine priorities for the competing goods of aesthetics, performance, reliability, safety, recyclability, and more. 

Of all these trade-offs, it may seem that safety should always be the top priority, tipping the scales all the way to complete reliability.

Trading Safety

I once asked students in an engineering course to consider how much rigor one ought to use in designing electronics for an entertainment device such as earbuds. I then asked them to compare that to the rigor one ought to use in designing a medical instrument such as a device to monitor premature infant vital signs. 

Some students thought there should be no difference in rigor. They thought that Christians should do their best to produce the most excellent and safe designs, regardless of the intended use. This position has some scriptural support. Colossians 3:23 tells us  “Whatever you do, work at it with all your heart, as working for the Lord, not for men.”  No matter where we find ourselves, every occupation is worthy of our best efforts as an offering to the Lord. 

Other students indicated that the preemie monitor should be designed with utmost care and much more attention, compared to the earbuds. This position also has some scriptural support. Philippians 4:8 tells us  “Finally, brothers, whatever is true, whatever is noble, whatever is right, whatever is pure, whatever is lovely, whatever is admirable—if anything is excellent or praiseworthy—think about such things.”  Spending more time on a more noble technology is one way to implement Paul’s directive. 

Can you go overboard on safety?  Is there ever an acceptable risk?  I believe so. Consider two examples. First, look at the common nail hammer. It is designed to pound nails into wood. This purpose leads to a design with a hard striking surface, a relatively heavy weight to provide momentum when the striking surface is swung, and a long handle to harness the centrifugal force of that swing into a powerful impact on the head of the nail. The design is appropriate to the need. The design is also deadly. That same powerful impact on a person’s head will kill. We could alleviate that risk by reducing the weight and softening the striking surface, shortening the handle to reduce the swinging force, and so forth. The resulting pillow on a stubby stick would no longer be able to kill, but it wouldn’t be able to pound nails either. 

A second example is choosing the acceptable risk in automobiles. We could make cars safer by adding steel plating to protect passengers during a crash. However, the extra weight drastically lowers gas mileage. We could make cars even more robust during accidents by eliminating fragile windows. However, the lack of visibility would make driving much less enjoyable and might well increase the chance of accidents. Eventually, as we added more and more bulk, the car would no longer fit in the lane or in a residential garage. All the extra material would push the price of the safer automobile beyond the reach of most budgets. 

Balancing Act

Good designs are a balance of competing goals. If the balance is distorted, favoring one goal to the exclusion of others, the resulting product may be dysfunctional. Proper function depends on meeting multiple goals simultaneously. 

Not only are products the result of a trade-off, but the engineering design process itself is also a trade-off. The old adage “better, faster, cheaper -- pick any two” is a reflection of the balance between the scope, schedule, and cost of a project. Does this mean that one must always accept less of one goal to achieve more of another?  Not necessarily. Sometimes we find a clever new way to achieve both lower cost and higher quality, e.g., by reducing waste. Sometimes we find an innovation that lets us achieve both environmental stewardship and corporate profit, e.g., by reusing and recycling. Sometimes we find a way to make a part both lighter and stronger, e.g., by using composite materials. Such wise combinations are one way to pursue designs that are excellent and praiseworthy.