They also required engine software that detected the sudden increase in speed associated with a shaft break and automatically cut fuel.

During the development of the A380, the German and French sides were using different versions of the CATIA PLM software (i.e. CAD), which prevented people from looking at a single unified model of the plane. One concrete problem it caused was major problems with the wiring harnesses, which led to a 2 year delay in the program, and 3 early A380's which couldn't be sold. (Airbus kept one for test, the other two got sent to museums)

That manifested in this accident because the wing wiring was routed through the engine disk burst axes (a hazard which is explicitly accounted for) with insufficient redundancy. That created the dangerous situation where they couldn't turn off the engine after landing.

Hue is basically the only bulbs not being sourced from the same couple of white label manufacturers. Philips/Signify's rapidly shrinking line of dumb bulbs are being sourced from there too.

Never buy filament style bulbs. They are universally unreliable because of poor thermals with the emitters.

I've heard a theory that it has to do with genetics and lower eye sensitivity.

Cree is now no more; the bulbs are just a brand for FEIT who imports the same unreliable Chinese white-label bulbs.

It works out to be more efficient, at least in terms of mass, to send up large tanks of compressed gas instead.

Conservation of mass: if a cubic meter of air escapes, that's 1.25 kg, and you need at least that much in candles. (You actually need 2 kg because the candle isn't solid oxygen)

There's ultimately 1.2 t of atmosphere on the ISS. This will also result in a pure oxygen atmosphere, which is dangerous. You need nitrogen.

Any funds lying around are supposed to be for temporary imbalances, but became significant due to a major demographic imbalance: the Baby Boom.

But yes. The only way you can resize windows through System 7 is the resize widget. You cannot grab anywhere else and drag. They couldn't afford the extra chrome pixels, again, on a 512 x 342 screen.

The most immediate are pull-down menus at the top of the screen. They work good on a 9 inch screen, they are awful with 27 inch displays.

Another related change are modal dialog boxes. When you have a 9 inch screen you're fundamentally looking at one document in one app at a time. When you got 2 27's that's not true anymore.

In the case of 401(k)s/DC plans and private pensions/DB plans, the government allowed savings without "confiscation," i.e. immediate taxation. They gave us the benefit of deferred taxation if you wait until retirement age.

The humans who do work in logistics have been demanding higher standards of living and therefore better pay and healthcare in first-world countries.

UPS drivers are unionized in the US and their cost to the company (salary + healthcare + pension) is now over $170,000/year each.

Original 1984 critical hardware: the box has an EEPROM module, you swap it on the plane.

FMS (which requires monthly nav data updates) and all modern hardware: the box can be updated over the ARINC 429 serial bus or Ethernet (newer systems/planes), called dataloading

Dataloading had different methods. A320s through the 2000's, most airlines had a 3.5 floppy disk drive on board (Airbus FDDU), and a mechanic fed floppies in. It was slow. Evolution of that was a USB port that took a flash drive.

Most current planes of older models just got rid of on-board dataloading. The mechanic uses a laptop with a cable or purpose-built tablet and plugs into a port. The mechanic can download the software via Wi-Fi or cellular onto the device: https://www.teledynecontrols.com/products/hardware-systems/p...

Airlines can indeed buy a on-board box that connects to Wi-Fi and LTE at the gate which downloads software. This is standard for the latest models that produce more data (A350, 787), but optional for older models. The mechanic still needs to go to the plane and push the buttons to tell it to load.

https://www.teledynecontrols.com/products/dataloading/eadl-x... https://www.teledynecontrols.com/products/hardware-systems/g...