Should the U.S adopt the Metric system completely and why?

The easiest way for the US to switch to metric is 1. require that the metric system is taught and USED in schools 2. make all new signs using the metric system 3. slowly apply and increase some sort of economic pressure on businesses to encourage them into adopting the metric system.
 
The easiest way for the US to switch to metric is 1. require that the metric system is taught and USED in schools 2. make all new signs using the metric system 3. slowly apply and increase some sort of economic pressure on businesses to encourage them into adopting the metric system.

We are taught it in schools, (5th grade or something close to that for me) we also do use it in science and sometimes math..
 
What is 0 Farenheit = in real (read: Celsius) measurement?

-20 C is a cold day, but nowhere near the "don't go outside" range. Hell -40 isn't that bad as long as you have your toque and mitts on (and it isn't windy..because that just sucks).
 
On the other hand, I think using hydrogen or helium as the standard instead of water would make for a better, more universal system. If the units of temperature did not use the term degree I'd probably define 0 as absolute 0 and 1 as the melting point of Helium (the lowest melting point of any element).

Bad idea.

Using a melting point as a standard for temperature is bad anyway, because the melting point depends on the pressure, but it is especially bad for helium, because at standard pressure it does not even have a melting point. So you would have to define an arbitrary pressure first, making the standard reliant on other standards.

And using the triple point does not work, because helium does not have one.
The closest thing to your proposal that makes sense would be using the triple point of Hydrogen, which is at roughly 14K

But switching temperature units is not so important anyway, as Fahrenheit is one of the saner imperial units. It would be much more important to switch all those other silly other units to metric ones. There is not much need for different temperature scales in daily life and where there is need for different scales, the people use whatever temperature unit fits their needs: microkelvins, electron volts or whatever.
 
Celsius 0 - 100 (Based on water, the largest component of our natural world)

Fahrenheit 0 - 100 (Based on human comfort level)

Clearly the Fahrenheit is "better" and caters for the egocentric among the human species who believe the world revolves around them.

:p
 
For daily life around here, at least, having a temperature scale where water freezes at 0 degrees is pretty convenient. Since I live in a place which has real seasons, so a quick glance at the thermometer will tell me if the roads are likely to be icy even before my morning coffee has had time to work (don't need higher cognitive functions to see if the mercury column is in the blue or red bit of the scale).

For scientific use, of course, whatever scale you choose to use had better start at absolute zero, anything else would simply make all the formulas needlessly complicated.
 
I don't know why people are saying that 0-100 F is human comfort levels, it is very subjective. I'm uncomfortable in anything less than 10 C (50F), which is the coldest maximum temperatures likely in a Melbourne winter. (minimum temperatures rarely drop below 0 C.)
 
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