But saying a system is at room temperature is actually just a way of expressing your ignorance about a system's microstate. It's taking off your glasses and say

But saying a system is at room temperature is actually just a way of expressing your ignorance about a system's microstate. It's taking off your glasses and saying "I don't have any idea what this system is doing in detail, all I personally know is how much energy it has per degree of freedom in the system".