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thebrainkid

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I was looking at the archived version [0], and I had a question.

Regarding their PCB design (visible on the bottom of the page, with additional details here [1], could someone explain why the optic part is separated from the rest of the board by a long, wavy connection?

(I am trying to learn more about PCB design ideas and principles.)

Thanks!

[0] https://web.archive.org/web/20220313204334/https://ploopy.co... [1] https://github.com/ploopyco/thumb-trackball/blob/main/hardwa...

The probably won't be relevant to most people here, but one book that changed how I approach my work (as a physician) was "Sapira's Art & Science of Bedside Diagnosis". It goes beyond the basics of physical diagnosis and delves into the history and statistics of various physical diagnostic techniques. It even describes a few low-tech techniques and skills which have been forgotten in the US medical system because of high-tech (and more expensive) imaging or lab testing regimens.

Incidentally, I found this book referenced in this article: "Why Should Doctors Read Medical Books?" by Dr. Eric Cassell [0]

[0] http://www.ericcassell.com/download/WhyShouldDoctorsReadMedi...

I agree. If the stranger says something along the lines of, "The number of blue dots is greater than 50." on one day, and on some subsequent day says, "The number of blue dots is not an odd number less than 45." or "The number if blue dots is not a number less than 40 which is divisible by 3.", then no new information will have been conveyed by these latter example statements. I imagine that the stranger could keep stringing them along like this for quite some time, and if multiple statements referring to the same subset were allowed (ex: "The number of blues is not a number which is divisible by 37 which is less than 45." and "The number of blues is not 37.") then the stranger could continue this indefinitely.

Thanks for the link! The story really helps to show how some future people might regard such a site and all the warnings we might place on/in it.