I've been trying to teach my young teenage kids about how things work, like, washing machines, cars, etc. One of the things I've learned is that it's a looooot easier to explain 20th century technology than 21st century technology.
Let me give you an example. My father was recently repairing his furnace in his camper, which is still a 20th century technology. He traced the problem to the switch that detects whether or not air is flowing, because furnaces have a safety feature such that if the air isn't flowing, it shuts the furnace off so it doesn't catch on fire. How does this switch work? Does it electronically count revolutions on a fan? Does it have two temperature sensors and then compute whether or not air is flowing by whether their delta is coming down or staying roughly the same temperature? Is it some other magical black box with integrated circuits and sensors and complexity greater than the computer I grew up with?
No. It's really simple. It's a big metal plate that sticks out into the airflow and if the air is moving, closes a switch. Have a look: https://www.walmart.com/ip/Dometic-31094-RV-Furnace-Heater-S... You can look at that thing, and as long as you have a basic understanding of electronics, and the basic understanding of physics one gets from simply living in the real world for a few years, you can see how that works.
I'm not saying this is better than what we have now. 21st century technology exists for a reason. Sometimes it is done well, sometimes it is done poorly, sometimes it is misused and abused, it's complicated. That fan switch has some fundamental issues in its design. It's nice that they are also easy to fix, since it's so simple, but I wouldn't guarantee it's the "best" solution. All I'm saying here is that this 20th century technology is easier to understand.
My car is festooned with complicated sensors and not just one black box, but a large number of black boxes with wires hooked in doing I have no idea what. For the most part, those sensors and black boxes have made cars that drive better, last longer, are net cheaper, and generally better, despite some specific complaints we may have about them, e.g., lacking physical controls. But they are certainly harder to understand than a 20th century car.
Computers are the same way. There is a profound sense in which computers today really aren't that different than a Commodore 64, they just run much faster. There are also profound senses in which that is not true; don't overinterpret that. But ultimately these things accept inputs, turn them into numbers, add and subtract them really quickly in complicated ways, then use those numbers to make pictures so we can interpret them. But I can almost explain to my teens how that worked in the 20th century down to the electronics level. My 21st century explanation involves a lot of handwaving, and I'm pretty sure I could spend literally a full work day giving a spontaneous, off-the-cuff presentation of that classic interview question "what happens when you load a page in the web browser" as it is!
Let me give you an example. My father was recently repairing his furnace in his camper, which is still a 20th century technology. He traced the problem to the switch that detects whether or not air is flowing, because furnaces have a safety feature such that if the air isn't flowing, it shuts the furnace off so it doesn't catch on fire. How does this switch work? Does it electronically count revolutions on a fan? Does it have two temperature sensors and then compute whether or not air is flowing by whether their delta is coming down or staying roughly the same temperature? Is it some other magical black box with integrated circuits and sensors and complexity greater than the computer I grew up with?
No. It's really simple. It's a big metal plate that sticks out into the airflow and if the air is moving, closes a switch. Have a look: https://www.walmart.com/ip/Dometic-31094-RV-Furnace-Heater-S... You can look at that thing, and as long as you have a basic understanding of electronics, and the basic understanding of physics one gets from simply living in the real world for a few years, you can see how that works.
I'm not saying this is better than what we have now. 21st century technology exists for a reason. Sometimes it is done well, sometimes it is done poorly, sometimes it is misused and abused, it's complicated. That fan switch has some fundamental issues in its design. It's nice that they are also easy to fix, since it's so simple, but I wouldn't guarantee it's the "best" solution. All I'm saying here is that this 20th century technology is easier to understand.
My car is festooned with complicated sensors and not just one black box, but a large number of black boxes with wires hooked in doing I have no idea what. For the most part, those sensors and black boxes have made cars that drive better, last longer, are net cheaper, and generally better, despite some specific complaints we may have about them, e.g., lacking physical controls. But they are certainly harder to understand than a 20th century car.
Computers are the same way. There is a profound sense in which computers today really aren't that different than a Commodore 64, they just run much faster. There are also profound senses in which that is not true; don't overinterpret that. But ultimately these things accept inputs, turn them into numbers, add and subtract them really quickly in complicated ways, then use those numbers to make pictures so we can interpret them. But I can almost explain to my teens how that worked in the 20th century down to the electronics level. My 21st century explanation involves a lot of handwaving, and I'm pretty sure I could spend literally a full work day giving a spontaneous, off-the-cuff presentation of that classic interview question "what happens when you load a page in the web browser" as it is!