The separation and space tends to resolve itself slowly and naturally as density increases. You get the pressure from the new people who live there to make crossings shorter and safer. It's slow, but it is effective.
On the contrary, our biggest cities started as little groups of houses. Letting places increase their density is a natural solution to a lot of this. The core problem is that we need to take away the power of local government to limit development.
When someone says incentive in this context, they usually mean the individual incentives of each of the workers to make money for themselves, get promoted to get a share of profit, not the overall fuzzy public pressure.
In general, this is why semi-private or private transport works so much better. If the end user is getting a bunch more value out of working on the train, they will pay more for the train than the road (if they have to pay the full price of the road vs train each time they use each).
That's a minuscule amount of the value it creates. And that's a problem, and a problem we can only fix by privatizing it. But most of the value it creates is for the landowners around it. And that's why successful transit companies are also real estate developers. Even in our own history, that's how private transit worked before we killed it.
Of course, this is what happens when there's no profit motive. If we weren't making the marginal cost of using a road zero, and they had to compete with each other, and the people running transit wanted to make money rather than satisfy the requirements of a law, transit would be cheaper. That's how it is in all the places in the world where transit is really good.
You don't need to share the original image with everyone, just like how journalists don't share their audio recordings from interviews with everyone. You share with an editor. Or a court.
This is correct (from someone who has worked on software to do this). Processing images for the 3D walkthroughs in real estate sometimes does this too.
There's been plenty of evidence that nothing is recorded or sent back, hardly "absence of complete proof". People have identified basically everything coming from the network stack of an iPhone.
This is already normalized in most modern office buildings. There are video and audio recording devices in virtually all common areas. This started a bit after private offices were done away with.
It's also a solved problem by not deferring anything unless that person is past working age and low income. Letting people sit on wealth that they cannot pay a wealth tax on is generally bad for everyone with less wealth.