Minor nit: There are classes of computers which contain redundant CPUs, PSUs, memory, etc where the components are hot swappable. Very specialized and expensiv

Minor nit: There are classes of computers which contain redundant CPUs, PSUs, memory, etc where the components are hot swappable. Very specialized and expensive hardware which is statistically unlikely to ever need a reboot! Source: My cousin used to sell these systems back in the 90's and 00's.