~ loginctl list-seats
~ loginctl seat-status seat0
~ sudo loginctl attach seat-1 /sys/devices/pci0000:00/0000:00:1c.4/0000:05:00.0/usb3
~ sudo loginctl attach seat-1 /sys/devices/pci0000:00/0000:00:01.1/0000:02:00.1/sound/card2
~ sudo loginctl flush-devices
Agile is stronger than ever, spending time on every small detail in a waterfall approach makes you burn human time on work that most probably could have been perfectly fine with a default approach.
Context matter but I fail to see people spending months on planning out a system before building anything.