
When training young pathologists, I would sit them down at a microscope with a slide showing an interesting subject. Maybe a liver section or part of the brain. They would think they knew it all. They would think they were skilled observers. The lesson was about patience and not knowing. Your brain hides things. It’s the only way it can function without data overload.

Then I would say, I want you to look at that field of view, without moving the slide, for 10 minutes. When you are ready, I’ll start my stop watch. OK?
I’d get a quizzical look, but what could they do. I was the “boss.” After about two minutes, “I’ve seen everything. There is nothing else to see.”
Keep looking!
Big sigh, “OK!”
At about four minutes, “I didn’t notice that. There’s an inclusion body and an odd looking vessel.” Followed by, “There’s a cell that’s in early apoptosis or mitosis.” This would go on until the end of the 10 minutes.
They were learning the patience needed to truly observe. The more they studied the art and science of pathology down the microscope the more they would see. Once they completed their 10,000 hours, they’d see almost everything in a Blink!
Then I’d show them a photo of a green field, with deciduous and evergreen trees, grasses and horsetails, ferns and mosses, lichens on a dead tree limb (never could get a suitable photo that included my favorite plant, the liverwort, a member of the Bryophytes) , and I’d say, What do you see?
Some would say, “Well, a field, I guess.”
Others, if I was lucky, would say “Plants, you know, grass and trees, and some moss. Oh! Yes! And that looks like a lichen on that tree? Why?”
I’d reply,
I see the unbelievable journey of our distant cousins, the plants, from ancient ferns and horsetails, to their distant cousins, the extensive network of truly ancient fungal mycelia, and before that, the origin of life itself.”
Think about it the next time you’re walking a country trail.
I recently noticed a cluster of liverworts, as a harbinger of climate change.

What do you now see in the image below?

You only see what you know!
Wishing you happy trails,
kev aka FitOldDog
PS For a healthy old age education is the key, so listen to your body, it has a lot to teach you.

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