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[–]magnora7 1 insightful - 1 fun1 insightful - 0 fun2 insightful - 1 fun -  (1 child)

I can build an unhackable operating system just fine;

One that has a browser that is compliant with all modern internet standards? One that can load every image type and file type like a regular computer?

It's easy to make a new command line OS that does basic stuff, but to make a fully-functioning modern operating system is a gargantuan task. Literally hundreds of thousands of man-hours of careful coding and testing. You have to make video players, build TCP/IP/HTTPS protocols from scratch so they work with other computers on the internet, build graphics rendering systems, and on and on and on.

And that's also assuming you're using non-backdoored hardware, which would probably have to be designed from scratch too. Since all intel chips have been shown to have a built-in backdoor, and probably AMD too

[–]binaryblob 2 insightful - 2 fun2 insightful - 1 fun3 insightful - 2 fun -  (0 children)

I didn't say how long it would take me, but if you want something like that done in 15 years with three billion dollars it can probably be done if you hand me the cash for just the software part (I don't think that would include a web-browser, because what a web-browser should do is not exactly written in a useful way). I would not write every line of code myself. The hardware stack would likely be at least an order of magnitude more expensive and whether or how hardware can be shielded against any time of remote sensing are likely state secrets. If some alien civilization wanted to read my screen from space, I think they would probably be able to do that. The cost for such infrastructure would probably be in the hundreds of trillions of dollars.