Do you have unconscious habits in your teaching practices? Do you ever stop to think about why you use a particular instructional pedagogy? Do you have the same rituals when you attempt to engage students in their learning? Do you have a routine as to how you start or end your class?
It is astonishing how easy it is for us to embrace doing things the way weâve always done them without stopping to ask, âWhy?â Often, this happens because it is much easier to continue going in the same direction than it is to reexamine the situation and reevaluate a decision or process. With all the effort required to think through an issue, it is all too easy to slip into a preexisting, fixed mindset. We choose to accept things as they are because it is the path of least resistance. In this section, we examine the true story of how Roman chariots dictated the dimensions of our modern railways and even influenced Americaâs space program. This exploration does not specifically relate to education and instruction, but it does crystallize our collective human tendency to live with established practices because itâs easier than changing them.
The Mindset of Railways
Before we reach back to Roman times, letâs start in the middle of the story. In the United States and many other parts of the world, the spacing between the rails on railroad tracks is a set standardâit is exactly 4 feet, 8½ inches (1.4351 meters). Now, some people might say 4 feet, 8½ inches seems to be a rather odd and seemingly arbitrary number. Why is it 4 feet, 8½ inches and not 4 feet, 6 inches or 5 feet, or some other random number? There are many theories, stories, and urban legends about this width, but the story that we like the best (whether it is true or not) is that 4 feet, 8½ inches was the track spacing that engineers in England used to build many of the first railroads, and it turns out that it was English expatriates who built most of the first U.S. railroads (Bianculli, 2001).
The reason England used a rail spacing of 4 feet, 8½ inches is that the same guild that had been building the horse-drawn wagons and handcarts in the prerailroad era in England also built the first English railways. It turns out that 4 feet, 8½ inches is the axle width the English wagon makers used to build the first railroad cars (Bianculli, 2003).
So, a question you might ask is, âWhy did the wagon makers use that particular axle width of 4 feet, 8½ inches?â It turns out that they did this because they had to. If they used any axle spacing other than 4 feet, 8½ inches, the wagon wheels would almost immediately break on the sides of the established wheel ruts throughout England, which coincidentally also happened to be 4 feet, 8½ inches.
This begs the question, âWhere did those old rutted roads in England originate?â It turns out that Imperial Rome made the first long-distance roads in Britainâand most of Western Europe, for that matterâmore than two thousand years ago. They built these roads for their Roman military, and the roads have been in steady use ever since (Bianculli, 2003).
In fact, it turns out that Roman war chariots formed the initial ruts in these first roads; and it also turns out that the axle spacing of these chariots was 4 feet, 8½ inches. So, everyone ever since has had to adapt to those ruts to avoid destroying their wheels. Thus, it turns out the United Statesâ standard railroad track spacing of 4 feet, 8½ inches actually derives (this is a fact!) from the original specifications for an Imperial Roman war chariot from more than two thousand years ago (Bianculli, 2003).
Now some of you might be thinking, But thatâs stupid, thatâs ridiculous, thatâs absurd, and you may be right. But hereâs the thingâspecifications, bureaucracies, institutions, and systems have a natural tendency to solidify in their ways of doing things. Often, they may require people to do things in the same way their predecessors have traditionally done them, despite the fact the world continues to change all around them.
So, in this situation, a question you might find yourself thinking is, What foolâwhat horseâs backsideâcame up with this way of doing things? In the case of the American railways, youâd actually be a lot closer to the truth than you could have ever imagined. Hereâs whyâit turns out Imperial Rome designed its war chariots to be just wide enough to accommodate the width of two horsesâ backsides (Bianculli, 2003).
Indeed, it was a horseâs backside that originally determined the way we continue to do things more than two millennia later. So, now we finally have the answer to the original questionâTTWWADI! Thatâs the way weâve always done it!
Space Travel and Horsesâ Backsides
The story doesnât end with railroad track spacing and horsesâ backsides. Although NASA has retired the space shuttle program, when we used to watch space shuttles rocketing off their launch pad, there were two big booster rockets attached to the sides of the main fuel cell. These were solid rocket boosters, which NASA had made at the ATK Thiokol Propulsion factory in Utah (Bianculli, 2003). If you had talked to the engineers who originally designed the solid rocket boosters many years back, they would have told you quite categorically that they wanted to make those solid rocket boosters a bit larger to get more thrust and, therefore, more lift at launch. The problem was that they had to ship the solid rocket boosters by train, 2,362 miles (3,801 km) from the factory in Utah to the launch site in Florida.
The railroad line from the factory to the launch site ran through various tunnels in the mountains. The tunnels were only slightly wider than the railroad tracks, and, of course, as we already know, those railroad tracks were only as wide as two horsesâ behinds (Bianculli, 2003).
So, what was obviously a major design feature to what was and continues to be one of the worldâs most advanced, sophisticated transportation systemsâwith more than a million moving parts at launchâwas actually influenced more than two thousand years ago by the width of two horsesâ asses.