This is exactly the whole "agile" vs traditional/waterfall mentality, scooters before motorcars, etc., put into practice. Hardware is hard.
> It's also completely possible that the parts simply aren't available
Fun fact: they don't make (commercially available) GPUs, NICs, pretty much any PC components rated below 0°F. If you need to design a system which needs to sit in an aircraft in Deadhorse, Alaska, you either pay out the nose for some serious engineering, or you just roll the dice. We rolled, and it turned out fine. That won't always be the case.
> It's also completely possible that the parts simply aren't available
Fun fact: they don't make (commercially available) GPUs, NICs, pretty much any PC components rated below 0°F. If you need to design a system which needs to sit in an aircraft in Deadhorse, Alaska, you either pay out the nose for some serious engineering, or you just roll the dice. We rolled, and it turned out fine. That won't always be the case.
What Spacex is doing is smart, not sloppy.