Showing posts with label knowledge. Show all posts
Showing posts with label knowledge. Show all posts

Sunday, June 14, 2015

The real world is not an exam

Original post:  Feb 25, 2014

It's often tempting to think that there are simple solutions to every problem. The reality is that there are going to be times when finding the right answer is downright difficult (if not near impossible).

As my boys begin their educational career, I can only imagine how many tests and exams they will take over the course of their academic lives. If you counted up the number of bubbles on the multiple choice tests that they will see between MCAS and NAEP and SATs, it might reach into the millions! But on many of those standardized test there is only one "correct" (best) answer. You and I both know that there is often no such analog in the real world.

The field of medicine is even more challenging. I've been reading a number of articles that discuss some of the factors that drive additional costs. There are all kinds of additional tests that are ordered by physicians. In many cases, they are attempting to rule out some very unlikely events.

This blog post titled "The Real World Is Not an Exam" offers one such example. A young man had just completed his medical training and was attempting to diagnose a patient:

He went off to evaluate an older patient with neck pain. It hurt when she turned her head. It had been going on for a few days. “Wouldn’t hurt to get a cardiac work-up,” he reported back. “Stress her, get an echo. Neck pain, you know, tipoff for heart disease. Gotta remember: In old women, heart disease will have unusual symptoms.”

True enough, occasionally. But not in this woman, who had a stiff neck and probably needed a new pillow.

He saw a patient whose hips were hurting after a long hike a few days before. “I got an M.R.I., pronto,” he announced. “It could be aseptic necrosis. Bone death. That’s what it usually is with someone taking those drugs.”

No, in fact, even with those drugs, it is usually muscle strain, the kind that hurts a lot and then goes away. Only in the wonderful world of the single best answer should you put your bets on anything more exotic.

The author offers a potential solution later in the piece:

They learn to recognize key phrases (neck pain) and stock situations (older woman), and they live in dread of unlikely worst-case scenarios. (Dies from heart attack while buying new pillow. You are sued.) Sometimes the actual, three-dimensional patient is not real enough to eradicate all her paper iterations.

Fear of uncertainty is expensive, and my young friend seemed poised to become single-handedly responsible for the high cost of health care in his ZIP code.

Like all victims of the single best answer syndrome, he ordered tests in wild profusion because, in his experience, every question had an answer and a test that would get you there. Options never included “You decide to keep an eye on it for a little while,” “You tell the patient to come back if it gets worse” or “You must make peace with the fact that you are never going to figure this one out.”

I wonder where the fine line is between caution and fear. It's probably near the line between knowledge and wisdom!

Monday, June 8, 2015

Limits of knowledge

Original post:  July 11, 2012

Yesterday at the company 5th anniversary celebration, we were treated to a display of "Are You Smarter Than a 5th Grader?" Five of our senior leaders competed against five actual fifth graders to answer six questions that were posed by an actual fifth grade teacher. The fifth graders managed to win a close match.

While we all laughed at the spectacle, this entertainment really did provide a valid lesson. No matter how intelligent we might be in any one subject, there is no one who can possibly know everything.

An example of that was a question in math. The executives were asked which anniversary would be a "sesquicentennial." That is not exactly an everyday word. If an actual fifth grade class was studying the subject and discussing these terms, the students would definitely be at a huge advantage over their competition. Personally, I had seen the word recently because my church is celebrating its 150th anniversary. It's odd how random fate can sometimes be.

The question for the executives in science asked about the three types of rock. I have been taking my boys to many science museums and knew two immediately:  igneous and metamorphic. The third one just kept dancing outside my recall. I knew it began with an "s" but I just couldn't pull it together in the 30 seconds. When they revealed "sedimentary" I shook my head because I know I should have known that.

I've learned that there are actual memory competitions. People compete from across the world. One of the tests is a random shuffle where they are shown three cards at a time and they must repeat the order back at the end. The competitors often discuss using the analogy of a house filled with items. They assign crazy values to the cards to help them remember more precisely. I can tell you that if my mind is like a house, there are many things tucked away in old boxes in the back that have long since been forgotten!

Some of the worst mistakes we can make are when we assume that we have more knowledge than we do. It often pays to adopt a humble approach and accept the limits of our knowledge.