Sure but that's not how it works now. I doesn't really matter how it worked in the past since the single use vapes are sold today.
https://www.vapvapor.es/aspire-avp-pro-recambio - you only have to change this part, that's all the maintainence. Also, smoker's convince is not a reason to throw batteries in the trash.
Educating and regulating how? Mandatory certificates for pit bull owners? What regulations of "puppy mills" would stop pit bulls from killing people?
Yeah, I wouldn't really trust any of that unless it came from interdisciplinary team of engineers that actually looked into it. I know that there's a lot of bloggers and youtubers that like to shit on every new idea but they are often wrong and are simply trying to create clickbait content.
Test hyperloop track was supposed to be build close to where I live, in Antequera, Andalucia, Spain. There's a railway test center built specifically for testing new rail technologies. Since it was build decades ago nothing was really tested there because bullet trains already existed and no one had any new designs since then. The trains didn't really change since 1980s. At the same time bullet trains still lose to planes on longer routes because they are simply too slow. Hyperloop was supposed to change this and offer rail technology that would compete with planes on long routes. It was supposed to be the next step in rail travel that would be able to compete with air travel. Now we know it wasn't feasible but just because it's not right for USA it doesn't mean it's not worth testing.
Again, maybe it is but you can't really be sure until you design it, estimate the cost, try to lower it by modifying the design and if it's close try building some prototype to test it. People keep talking like you can evaluate design like this on a napkin. That's just not how engineering works.
Why? Are you worried I wouldn't like you? Don't be. Most probably I don't even know you.
This has been said so many times it's boring: chihuahua with a bad owner never killed anyone.
Also: would you support mandatory background checks, permits and training for pit bull owners? To make sure that they only go to good owners...
Yeah, that's why we don't have any thousands mile long tubes transporting dangerous substances. Oh, wait. We do! What happens when someone shoots a gun at them? They go to jail! (look up Daniel Carson Lewis of Livengood).
In your theory, why can't the same laws protect 'railway tubes' that protect oil and gas pipelines? Why terrorist don't shoot guns at pipelines all the time? Why don't terrorist jump on high speed rail tracks and sabotage them? Where I live there's 5000 km of high speed tracks that are not "actively defended". There's just a fence. Big rock could take out a train. Why do you think no one ever attacked it but everyone would be shooting at hyperloop pipes for fun?
Oil pipelines are often buried underground, they can have up to 60'' in diameter. Hyperloop pipe is about 90'' in diameter. It could be feasible to put it underground. I'm not saying it's a good idea or bad idea. I'm just saying that some guy commenting on a blog is not a good reason not to try. Get enough of good engineers to work on it for a while and you will know if it's feasible or not. That's what they did. I think it was a good thing to try.
Kids killed by pit bulls make me sadder.
The pit bull discussion never ends. Pit bulls are like guns: objectively bad for society but some people really want to have them so we all have to suffer the consequences. Pit bull lovers don't care about all the victims, they only care about their personal needs and "rights". You can't convince someone not to be selfish so the entire discussion doesn't make any sense.
Oh, I never saw it. 1996 was a weird time in my life.