>>Heck your cell phone has thousands of times more computing power than the computing systems aboard the Apollo craft or for that matter...a couple of modern day I7 Intel home PC’s with 16 gigs of DDR memory could run the entire Apollo program from lift off to splash down!
The “old tech” of Apollo had redundancy built in (couldn’t go to Radio Shack, RIP, for replacement parts).
When we landed on the moon, they (people in mission control) knew what panels and technology were “not needed” any further if the crew still needed to cannibalize some components for parts to rewire/replace if for example the lander didn’t want to launch back to the capsule.
Even the space shuttle computer pales in comparison to a pocket cellphone.
However I still run into situations almost every week where my iphone is unresponsive to a touch command or other function and I have to completely shut it down and totally off for a couple of minutes so it can “recover” its brain. I wouldn’t trust my iphone to fly a plane.
Non sequitur...a military or spy device phone would have such redundancy...you and I don’t need it and if our phone broke down the latest models are probably better anyway. Space probes sent out now have redundant systems and back up albeit slower transmission systems.
The software in your iPhone, especially at the application level, is not developed the same way mission-critical avionics software is. It’s an old truism in engineering that you can get as much reliability as you’re willing to pay for. You wouldn’t like your iPhone much if it cost $10,000 and every app for it was $1000 or more. You don’t need that much reliability and wouldn’t pay for it.