Social media has become a toxic dump. If you wouldn't allow children to play in waste effluent from a 1960s nuclear power plant, then you shouldn't allow them to play in the social media that's out there. Because, frankly, of the two, plutonium is safer.
I do, however, contend that this is a perfectly fixable problem. There is no reason why social media couldn't be safe. USENET was never this bad. Hell, Slashdot at its worst was never as bad as Facebook at its best. And Kuro5hin was miles better than X. Had a better name, too. The reason it's bad is that politicians get a lot of kickbacks from the companies and the advertisers, plus a lot of free exposure to millions. Politicians would do ANYTHING for publicity.
I would therefore contend that Australia is fixing the wrong problem. Brain-damaging material on Facebook doesn't magically become less brain-damaging because kids have to work harder to get brain damage. Nor are adults mystically immune. If you took the planet's IQ today and compared it to what it was in the early 1990s, I'm convinced the global average would have dropped 30 points. Australia is, however, at least acknowledging that a problem exists. They just haven't identified the right one. I'll give them participation points. The rest of the globe, not so much.
I get an alert if the door doesn't close all the way or if it stays open over an hour. I can open the door to let the electrician in while I'm at work, or to let my teenager in if he forgot his keys at home. Etc.
That's actually a good question. Inks have changed somewhat over the past 5,000 years, and there's no particular reason to think that tattoo inks have been equally mobile across this timeframe.
But now we come to a deeper point. Basically, tattoos (as I've always understand it) are surgically-engineered scars, with the scar tissue supposedly locking the ink in place. It's quite probable that my understanding is wrong - this isn't exactly an area I've really looked into in any depth, so the probability of me being right is rather slim. Nonetheless, if I had been correct, then you might well expect the stuff to stay there. Skin is highly permeable, but scar tissue less so. As long as the molecules exceed the size that can migrate, then you'd think it would be fine.
That it isn't fine shows that one or more of these ideas must be wrong.
And?
I came, I saw, I deleted all your files.