A long time ago, when personal computers began to spread, they were isolated terminals, and it is said that they were not connected to the Internet.
Those who liked personal computers and had even a little knowledge were programming to improve the convenience of their terminals.
The programming explanation books lined up in the store once included a floppy disk. Programs and files were written there.
In other words, digital data and files were carried and shared by the book distribution network. It’s a dreamy story when you think about it now.
In one commentary book, programming was written plainly so that even beginners could understand it. And a floppy disk was attached as an appendix.
By copying the files written on the floppy disk to each person’s personal computer and booting, anyone could use the wonderful software described in the explanation book. According to the commentary
For the author of the book explained how the software works and how it works as carefully as possible, but the author made a mistake.
All the files on the floppy disk were compressed and no one could use them without decompressing them.
And the author didn’t mention a word about how to decompress the file. For the author, file compression and decompression would have been so obvious that no explanation was necessary.
As a lesson in this story, we must be aware that a major premise for one person is not recognized as a premise for those without knowledge of the field.
So much, the premise is too big, too ordinary, and invisible.
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That’s all for today’s post. Thank you
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