There’s nothing wrong with this model, it produces tradespeople with solid fundamentals and practical experience that they would not receive in a diploma mill.

That was probably true at some point, but it isn’t now.

My teenager works part time at McDonalds. She tells me the drive thru at her store is equipped with cameras that automatically track the progress of each vehicle from order taking to payment to presentation, as well as into the waiting bay if you end up there.

To DIY it you need three NICs (or an optical isolator, which is honestly more work than it’s worth) because the transmitting NIC needs to see a link up before it transmits anything. That link is most easily provided by the second port on the transmitting side.

Developing software to reliably move data across the link, and ensure that it’s properly formatted etc will still be your problem.

It’s not that we can’t do it today, it’s because like orbital data centres, it is nowhere close to being economically sensible.

Electrical and other safety-critical work very sensibly requires a skilled human to sign off on the results. This important safety requirement seems incompatible with your vision.

To be considered effective it would’ve had at least some substantial impact on the target group, which in my observation it hasn’t.

My eldest daughter, and my various teenage nieces (all of whom are under 16) have mostly forgotten that this ban even exists. They’ve continued using the same apps exactly as they did before.

One of my daughter’s 15 year old friends was locked out of Snapchat for about 15 minutes, until she had another 14 year old friend pass the facial recognition test on her behalf.

Up to 40km, depending on the wind. Embers can travel a long way.