• 0 Posts
  • 14 Comments
Joined 1 year ago
cake
Cake day: June 14th, 2023

help-circle






  • Older people tend to be richer because they’ve had more time to earn and save money. Compare a 20-year-old to a 40-year-old. Both spent about 20 years being a kid, growing up and going to school, but the 40-year-old had an extra 20 years after that to earn and save money. You can do the same comparison between a 40-year-old and a 60-year-old, but take all the money the 60-year-old earned in the first 20 years of working and invest it in the stock market for the next 20 years, while also continuing to work.

    Wealth can build like crazy. If you invest at 7% average annual return, you’ll double your money in just over 10 years. At 10% the doubling period is just over 7 years. Now consider that the S&P 500 had an average annualized return over 10% between 1957 and 2023, and that 60-year-old’s 20 year investment would multiply by 6.7x.




  • To put this into better perspective we need to look at this relative to the number of employees. From the article:

    Tesco warehouse in Rugeley, near Birmingham, recorded only eight ambulance callouts in three years versus the 115 logged at a nearby Amazon site. Both warehouses employed large numbers of workers at the time – 1,300 at Tesco’s site and around 1,800 at Amazon’s.

    So 6.15 calls / 1000 employees for Tesco vs 63 calls / 1000 employees for Amazon, or just over 10 times the rate.

    I wonder what the differences are. Do Amazon force them to work a lot longer hours? Do they not provide air conditioning whereas Tesco do? Those two factors could make a huge difference.


  • All the spatial persistence stuff was handled by the desktop database which was an invisible file that got stored on the disk. Hard drives and floppies each had their own so that if you shared a floppy with a friend the spatial properties of the floppy would travel with it. This also worked if you moved a hard drive from one system to another for the same reason.

    It also worked over AppleShare network file sharing. Where it didn’t work was if you had 2 different computers since there was no way to sync information between them. You essentially treated each computer as its own thing which is really more in keeping with the spirit of spatial design. After all, it would be really weird if 2 different drawers in different rooms in your house somehow always had identical contents which stayed in sync.


  • Q for all those with suggestions: do any of these attempt to replicate the Spatial Finder? No other system I’ve seen (contemporary to OS 9 or since then) seems to have got this element correct (or even attempted to do so).

    It’s such a key part of the OS 9 (and earlier) experience. Double click a folder and it opens where you expect it to, in the shape you left it, with the icons laid out as you left them. It’s a method of working that gives you great familiarity and confidence.

    If anyone’s worked in a kitchen or workshop for a long time and developed a deep memory for the layout and the location of every tool, material, and control, then they’ll know what I’m talking about. You can move around and work incredibly efficiently, relying greatly on muscle memory.

    Since the demise of OS 9, the only way to retain this level of operation has been to rely heavily on the keyboard. Since almost everything on the screen is transient and unreliably positioned (non-spatial), only the keyboard is persistent enough to allow us to work at the speed of thought and rely on muscle memory. It’s been so long now that I think people forget (or never knew) that the contents of the screen could also be persistent and spatial this way.