A car's "radiator" doesn't actually lose heat by radiation though. It conducts heat to the air rushing through it. That's absolutely nothing like a radiator in a vacuum.
I didn't even feel particularly safe as a pedestrian in Tokyo or Osaka. Despite the good public transport, Japanese cities have cars absolutely everywhere, even in tiny streets that should really be pedestrian zones. Paris is much better in my opinion.
Tokyo fundamentally doesn't define pedestrian only zones except in very specific conditions.
I get why you'd feel unsafe, but IMHO it's the exact opposite effect: 99% of the streets don't have a sidewalk or anything specific for pedestrian, and thus are pedestrian first.
Small kids, dogs, cats, elderlies will be walking in the middle of the street. As a result cars drive way slower than they'd do in Paris and they need to be way more alert to what's happening. Every small street is basically the same as the pedestrian zone in the middle of Paris.
Except these seamless modes have been broken for many years. Also using a containerized Windows means one doesn't have to fiddle with the insane Windows 11 setup process and TPM issues.
It's pretty good. They use XfreeRDP to remote into the container and display individual windows. This somehow performs a lot better than the GPU emulations of VirtualBox or VMware. I guess Microsoft put some effort into optimizing RDP for Terminal Server applications.
Even 21 was only possible by cheating (optimizing away the difficult part using prior knowledge of the results) [1]. Craig Gidney has a blog post that shows the actual quantum circuit for factoring 21 which is far beyond the capabilities of current quantum computers [2].
The processes involved in solar fusion have been well understood since the 1930s [1,2]. Hans Bethe won a Nobel Prize for this in 1967. The problem is that one cannot produce stellar densities and pressures in any kind of apparatus.
The antiproton decelerator at CERN has been operational for 25 years, and they have plenty of smart engineers there. Unlike in the 1940s, the underlying physics has been well understood for many decades. I would argue that nuclear fission is the counter example that happens to be surprisingly easy to do.
All experiments at the AD are strongly limited by the low rates. If there was a straightforward way to improve this by many orders of magnitude, they would have done it a long time ago.
