SI Units form the official language of international science. As such I want to discuss whether questions that are tagged for either science-based or hard-science should automatically warrant the use of only metric SI Units.
I ask in relation to several answers to Quick solutions to a modern warning placed on the surface of the earth for future generations, where initially only imperial measures were used without even offering conversions.
This question is not intended to be a debate about the differences between units of measure currently in use in the USA in comparison to the traditional British Imperial System. In New Zealand we officially only use metric, but we have a lot of first generation ex-pat Brits who casually use Imperial Units interchangeably with their metric near equivalents - yards for metres, miles for kilometres (which is problematic because they're really not the same thing), etc... and we have a lot of media made for the US market in which Customary Units are used, which apparently differ, but they just get read the same way.
Nor is this about the use of Imperial or Customary Units in general like Imperial vs. Metric System.
Note well: We are not debating the relative merits of a given system of measurements only whether science questions should automatically require a particular system.