The Reason For Testing is to Achieve Commercial Economics...Chief, you won't need idiot hands to wash dishes on a commercial scale, just like you won't need hands to mix the slurry on a commercial scale.
So, temperature is just as much an issue on dishwashing on a commercial scale, as it may be on purifying graphite to 99.99% on a commercial scale.
Seriously Chief, don't try to make excuses for things that aren't reasonable expectations. You're simple analogy does not correlate with what may be expected on a larger scale mining operation. It just doesn't make sense to expect it to be that way.
I might not be a chemist like hoov claims to be, but I do understand certain things, and it's just not that simple. JMO