alt Hacker News>>The errors caused by radiation are extremely frequent and you definitely must guard against them, otherwise anything will fail immediately in space.
I asked this in another thread but I will repeat it here - how come that their bog standard iPhones that they use for taking pictures with are still operating fine then? If like you said, "anything will fail immediately" - doesn't sound like that's the case? They have electronic watches with no radiation hardening, they have regular laptops with no radiation hardening.....I'm not saying that it's not a problem, but it definitely doesn't seem to be in the area of "immediately failing in space" if you don't have that.
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None of these devices are mission-critical. Worst case they have to be restarted; then they are fine again and the world moves on.
Aren't the stakes a little different with an iPhone that you have for picture taking and entertainment vs the systems that manage your trajectory and life support?
The fact that a handful of devices hasn't failed is hardly proof that they can't. Hell, I've driven thousands of times and never actually NEEDED my seatbelt.
(I have no expertise or knowledge of this area but...)
tl;dr: people need (heavy) radiation shielding, cpus et al can live without it
I'd imagine their bog standard iPhones and watches are generally in parts of the craft which have more radiation protection than others and, further, that it's probably only the parts where people are going to be that get that protection (due to weight savings, etc.) and if you can mitigate radiation problems by using a $30 CPU instead of a $2 CPU and save $100K of weight on radiation shielding on the CPU compartment, that's a no-brainer.
As other posters have said, the personal devices of the astronauts are already used in spaces that are much better shielded against radiation than a typical satellite or the Mars helicopter.
Radiation shields add mass and volume, so it helps if the electronics is somewhat resistant to radiation, allowing for less efficient shields.
Even with the enhanced shielding, the personal devices experience errors from time to time, e.g. the photographs taken may have some wrong pixels and they sometimes have to reboot their laptops or smartphones, if weird behavior happens. Like others have said, these kinds of errors are not important, unlike in the computers that control the spacecraft, where errors are not acceptable, so those must use either hardware or software means to combat the effects of radiation errors.