#silentsunday
Your Grandmother’s Spirit
Evidently he had been pondering the question. Maybe he had glanced at the back wall where our classroom expectations are posted — where they are cautioned to speak as if Nani is in the room.
“Mister,” he said, motioning me to come over to their table. “Mister, is your grandmother’s spirit really in the room?”
I smiled.
“Oh no,” I said.
“It’s not that her spirit is in the room. Nani is in the room. Every day, back there.” I pointed to the bookcases in the far corner.
The boys instantly turned to look. Then they turned back with confused looks on their faces.
“Every day,” I said with my open hand on my chest. “Every day I think of her. So yes, my grandmother’s spirit is very much in this room.”
Windy Day Morning Sun
That morning, a fierce wind howled. We could hear its moaning thru the walls of the house.
Shrub and tree branches whipped dramatically left and right and up and down. A large limb lay on the ground at the base of the Walnut tree. The garbage cans fell over. The sticks and trimmings in the yard waste can were gone, evidently having been blown down the street and maybe piled up in the corner of someone’s yard.
The car shook as I commuted east in the pre-dawn light.
The rising sun struggled to shine.
Sawbucks and Sawhorses
Let’s talk about “sawbucks” again. Steely-eyed mjb observed that they seem to be the same as “sawhorses”. I mean there are sawhorses and there are sawbucks.
Go look. I’ll wait.
Same thing, right? But no. Check out this article about building a sawbuck out of logs, and take a moment to look at that the guy’s sawbuck.
Not a sawhorse.
I’m reminded (no surprise perhaps) of linear algebra. It was all about matrices. We added, subtracted, and inverted them. We diagonalized and decomposed them. We did all this, and then we were done … until I find out later, in the twilight of my years, that a matrix is just a particular way to calculate a linear transformation. The matrices are mere representations. The important concepts are the transformations. I missed the memo!
So don’t wait until your twilight years! Read the memo. Know your concepts. A sawhorse is a sawhorse, and a sawbuck is something else.
New Year Hanging Around
I’m not waiting any longer. There’s an hour to go before the Central Time ball drops. But my laptop is down to 20%, the fair and industrious Trudy has long given up the ghost, Miss Izzy is catatonic under my AHIHA hockey jersey, the Zyrtec is having its side-effect, and so let’s do this. One last fish for 2023.
The Red Oaks know their time. Their burgundy leaves turn brown and fall to the ground.
In the brisk wind last week, I raked leaves into ever-metamorphosing piles, gathered them up, took them into the back yard, mulched them with the mower, and dumped them onto this year’s new compost pile. A day later, the center of the pile was hot in spite of it being baby-it’s-cold outside (in a Central Texas kind of way).
Today is far from cold. The sun is shining, and the sky is blue. It’s too warm for a sweater. A good day for a swim.
In the sun, wasps and bees and manifold flittering insectoids are happy with the wildflower blossoms that persist even with the fallen leaves all around. The wildflowers don’t seem to particularly care about time, hanging on as long as the pollinators hang around.
Happy New Year.
Sawbucks for a Non-Handy Man
1. The Need
Was it ten years ago? Maybe fifteen. According to the fair and industrious Trudy, Ben was still in high school, so … 14 years ago. That’s how long ago this was.
There I was standing in our driveway rasumfrassing to myself amidst a bunch of scattered branches. I was tired of cutting fallen tree limbs precariously perched on the garbage can. I needed a sawbuck.
I once saw a sawbuck made by a cousin of mine. He had slapped it together from scrap in a couple minutes just to make … well, to simplify the cutting of fallen tree limbs. Just what I needed. And I recalled my cousin whipping this thing together as naturally and second-nature to him as … deriving the Lagrange planetary equations might once have been to me. Ok so perhaps as second-nature as … deriving the quadratic formula would be for me now. QED. That’s how quickly I remembered him assembling that thing.
I had had enough. I needed a sawbuck.
2. Sawbuck v1.0
Remember now, this is 10 or 15 or 14 years ago.
There I was in the driveway with the branches about me. In my rasumfrassage, I determined to make me a sawbuck.
Of course, there were some long-ago scrounged 2x4s in the garage and some oft-used and oft-straightened über-nails. These would have been sufficient, but I had something more in mind. Earlier that day, I had spied a pile of lumber by the curb down the street. Someone was throwing away perfectly good stuff.
I walked down to inspect. And I proudly returned with six long, pristine tongue-and-groove boards under my arms. I set the boards down. Got the 2x4s. Got the nails. And got some screws that many years before I had scrounged from my father’s basement when he sold his house (which would have been like 30 years ago?).
And I proceeded to make me a sawbuck.
3. Sawbuck v2.0
In the years since, the sawbuck has served its purpose well. But that was 10 or 15 or 14 years ago. You remember that, right? (See the opening sentence above.)
Time has passed. The weather has taken its toll, as it will on a sawbuck left out in the elements. Those tongue-and-groove boards have utterly decomposed. So this afternoon I decided that my sawbuck had become a hazard.
The scrounged 2x4s and über-nails from which the business-end of the sawbuck was composed are fine. My father’s basement-stashed screws were still in pristine shape. And there were four tongue-and-groove boards from that years-ago pile down the street remaining in the garage, stacked neatly where I put them them 10 or 15 or 14 years ago. (Ok not right where I put them then, but near enough by.)
Shining sun. Blue sky. Frische Luft. Fast-forward a bit (as you might wish me to do about now), and … I’ve got me a brand-ish new sawbuck. It’s a double doozie. This time I treated the tongue-and-groove boards with Australian Timber Oil, so the boards shouldn’t decompose so quickly, right? They should last … what … 20 years?
When that time does come, the two remaining tongue-and-groove boards from the pile down the street will be waiting in the garage for Sawbuck v3.0.
Causes and Effects
We can keep going with this, you know…
1. Root Cause Analysis
When you launch rockets or fly airplanes full of passengers, you want things to go well. You don’t want mishaps.
There is an engineering discipline called root cause analysis dedicated to providing objective techniques for trying to make sure bad days don’t happen. It is used by NASA and the FAA — think the Challenger explosion, think near collisions between passenger jets on a runway. But it’s actually a general tool for thinking about how to avoid problems.
Today you will use root cause analysis as a tool to understand the US Civil War. And you’ll also do some math.
2. The Assignment
I hand out the assignment to the class. It includes what the students are to do and a rubric for how I will grade their work. Here are their instructions.
- Write a brief definition of root cause analysis. Explain what it is and what some of the core concepts are. Cite your references.
- Provide two examples of how root cause analysis has been used in the real world. Briefly explain each example and how the analysis was used. Cite your references.
- Briefly explain your understanding of the difference between a root cause and a proximate cause.
- Before 2019, the Texas social studies curriculum mandated teaching the causes of the civil war as (a) sectionalism, (b) states’ rights, and (c) slavery, in that order. Briefly summarize what each of those causes “mean” with regard to the US Civil War. Cite your references.
- Explicitly classify those three causes of the Civil War as either root or proximate causes. Briefly justify your classification based on the definitions.
- Briefly explain why you do or don’t feel that (a) the US Civil War was a “mishap” and (b) root cause analysis is a useful tool for understanding the history of the US Civil War. (There is no “correct” answer, here. I am interested in your thinking.)
- And… since this is a math class, also complete this synthetic division worksheet.
Let’s skip over the grading rubric. Nothing of significance to see there, right?
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