u/RGregoryClark

Another major workplace injury occurred at SpaceX last year:

SpaceX crane collapse in Texas being investigated by OSHA.
PUBLISHED THU, JUN 26 2025 7:54 PM EDT UPDATED THU, JUN 26 2025 11:27 PM EDT
The crane collapse was captured in a livestream by Lab Padre on YouTube, a SpaceX-focused channel. Clips from Lab Padre were widely shared on social media, including on X, which is owned by SpaceX CEO Elon Musk. It wasn’t immediately clear whether any SpaceX workers were injured as a result of the incident. Musk and other company executives didn’t respond to a request for comment.
https://www.cnbc.com/2025/06/26/spacex-crane-collapse-in-texas-being-investigated-by-osha.html

A heads up about how multi-billion dollar corporations operate. Whenever there is an accident where people were potentially injured, if there were no injuries the company quickly gets out there were no injuries. For instance like how SpaceX quickly got out there were no injuries during the static test explosion. But if the company makes no comment on the accident, it’s a good chance there were injuries. And the longer the company says nothing about the accident the more likely it becomes there were serious injuries.

Article from 2023 detailing SpaceX culture downplaying worker safety:

A REUTERS INVESTIGATION
At SpaceX, worker injuries soar in Elon Musk’s rush to Mars.
SpaceX rockets on a launchpad near Brownsville, Texas. The facility had a worker-injury rate six times the space-industry average in 2022. REUTERS/Go Nakamura
Reuters documented at least 600 previously unreported workplace injuries at Musk’s rocket company: crushed limbs, amputations, electrocutions, head and eye wounds and one death. SpaceX employees say they’re paying the price for the billionaire’s push to colonize space at breakneck speed.
By MARISA TAYLOR
Filed Nov. 10, 2023, 11 a.m. GMT
https://www.reuters.com/investigates/special-report/spacex-musk-safety/

From the article:

Scientists at the U.S. Department of Energy's (DOE) Brookhaven National Laboratory have uncovered experimental evidence that particles of matter emerging from energetic subatomic smashups retain a key feature of virtual particles that exist only fleetingly in the quantum vacuum. The finding offers a new way to explore how the vacuum—once thought of as empty space—provides important ingredients needed to transform virtual "nothingness" into the matter that makes up our world.

This experiment has been interpreted to suggest virtual particles are “real” particles. This causes a problem though because virtual particles don’t have to satisfy energy conservation. The explanation has always been that virtual particles wink in and out of existence at such short times scales, ca. 10^-21 and shorter, that they can not be measured.

But I’ve always been ill-at-ease with this explanation. The reason is under special relativity, the time they exist can be made longer if the system is moving fast enough. Consider then, the highest Lorentz time dilation factor we can reach with our proton accelerators is ca. 10,000. But the highest energies observed with ultra high energy cosmic rays, UHECR’s, is a million times higher than our accelerators, corresponding to an equivalently higher time dilation to reach a dilation factor of 10^10. This means we would observe the existence times of the “virtual particles” arising from UHECR’s at 10^-11 s, or 10 picoseconds. This is well within the measuring times we’re capable of. In fact, the explanation of anomalous effects we observe with UHECR’s may be due to those “virtual particles” being measured as real:

https://www.google.com/search?q=anomalies+of+uhecr.

And using the fastest timing equipment we now have, we might not even have resort to looking at UHECR’s. Agostini, Krausz, and L’Huillier won the Nobel Prize in Physics in 2023 for creating methods of measuring events at attosecond times scales, 10^-18. Then at our highest particle accelerator energies generating time dilations factors of ca. 10,000, virtual particles existing at 10^-21 seconds, would be observed by us to to last 10^-17 seconds, 10 attoseconds.

Another intriguing approach is from measurements of quantum tunneling. Some experimental results suggest this might happen at attosecond times scales rather than happening instantaneously as previously thought. Then measurements of quantum tunneling in accelerated systems to 10,000 time dilation factor would bring that time down to the 10^14 second, 10 femtosecond range. This is within the range of time measuring devices already present at our highest energy accelerators.

I really enjoyed Felix Dennis book:

How to Get Rich: One of the World's Greatest Entrepreneurs Shares His Secrets. by Felix Dennis (Author) Format: Kindle Edition

There must be other books like that about entrepreneurs who became self-made millionaires.

Other suggestions?