Again, it's interesting that all of those are issues caused by metrication, the switch to metric units, rather than issue caused by customary or imperial units

Again, it's interesting that all of those are issues caused by metrication, the switch to metric units, rather than issue caused by customary or imperial units themselves. > The costs of maintaining different systems aren't large but accumulate indefinitely, the cost to switch is finite. That only makes sense if there's no discount rate, nothing else that could be done with the money we'd spend to switch. I suspect there are a lot of things that could be done that would yield higher rewards.