I recently met up with a guy from college who I hadn’t seen since the late 70s. His name is Al Lacki (hi Al!) and he reached out to me after accidentally coming across this web site! We had a good chat over a few beers, with lots of reminiscing, catching up, and pondering the world in a way that only engineering school graduates can ponder it. He’s got a great web site dedicated to Corvairs and other rear engine cars. If you’re into Corvairs it’s definitely a must-see site. And even if you’re not, it’s worth a visit.
In other recent doings, I got hooked on a band that started out over 20 years ago, not long after Al and I had last seen each other. They’re called Sawyer Brown, and they’re known as a modern country and western act. I was never big on country and western; it just gets too twangy and weepy and harmonic for me (although it does bring back memories of younger days when I used to cruise the hinterlands of Pennsylvania and Ohio and Maryland and Virginia on photo expeditions). Sawyer Brown is still pretty twangy and weepy and harmonic. But they mix a lot of rock and roll into their music, so it isn’t so hard for an old time rocker like me to relate to it.
I recently picked up their album “The Hits – Live”, and I have to say that it’s an easy album to listen to, with elements of evocative story-telling, good-time foot stompin, honest sentimentality, and sly humor (something that rock and roll doesn’t even try to do). The song that best combines humor and country-style narrative is called “800 Pound Jesus”. It’s hard to say if the song is a parody of the typical country faith song, or whether it still has a theological agenda (or maybe both). But it does have a catchy refrain, one that you can sing while walking in from the parking lot in the morning. The basic premise of the song is that a guy stops at a yard sale and buys an eight-foot high concrete statue of Jesus. The refrain obviously claims that this statue weighed 800 pounds.
Having been trained as an engineer (in the same class with Al), I decided to investigate the weight claim; would an eight-foot tall human statue in concrete really weigh that much? OK, first question: what is the cubic volume of a human body? A science web site suggested that the volume of our bodies depends mostly upon our weight, and suggested using a conversion factor of 1 cubic centimeter per gram. Let’s assume that Jesus was relatively tall and thin; I’ll guess that he weighed around 140 pounds, since he did a lot of walking and ate mostly fish and figs and wheat berries. Remember, there were no Big Macs or three-meat pizzas back then. There are 453 grams per pound, so we shall re-state Jesus’ weight in metric, as 63,420 grams. Then using the cubic centimeter-to-grams conversion factor of 1, we can say that Jesus’ body filled about 63,420 cubic centimeters of space.
Next, I’ll guess that Jesus was about 5 feet, 11 inches tall; an average height today, but back in the old days of malnutrition, relatively tall. No one in the New Testament bothered to describe what Jesus looked like; he could have been a shrimp. But the Gospels do indicate that Jesus had a very charismatic personality, and guys like that are usually pretty tall. So, I’ll go with 5 feet, 11 inches, which can also be stated as 5.9 feet.
Sawyer Brown points out that the statue in question was 8 feet tall. We will assume that the statue is correctly proportioned for a tall, thin human (as most Jesus statues are); so, in order to estimate its volume from the 63,420 cubic centimeters for the actual Jesus, we need to scale up each dimension (depth, height and width) by a factor of 8 / 5.9. The volume increase factor is thus (8/5.9) x (8/5.9) x (8/5.9), which is about 2.493. So we multiply 63,420 by 2.493, and get 158,106 cubic centimeters for the concrete Jesus. That’s a lot of concrete. Another web site estimates that dry concrete weighs at least 2.3 grams per cubic centimeter. So, the concrete Jesus must weigh around 363,643 grams, which is 363.6 kilograms. Each kilogram equals about 2.2 pounds. Multiply 363.6 by 2.2, and we get . . . 800 pounds !!!!! (Actually, it could be a bit more, since I didn’t account for the added volume from the statue’s robes.)
(The question remains, however, how the guy in the song got this statue home; even if he had a heavy duty pickup truck, as a lot of country-western fans do, he would still need an industrial hoist to load and unload the statue.)
I hope that Al Lacki is proud of me for quantitatively investigating the weight issue! But despite our marvelous mathematical intellects, Al and I must bow down before the greater power involved here. As the refrain to “800 Pound Jesus” goes, “he’s a bigger man than you or me.” :^)