Classification of Coffee Cups

My Knowledge Organization aka Classification professor often discusses how we are all essentially classifying beings, but how each person brings chaos into order in slightly different ways.

For instance, my partner, she insists on placing the travel mugs in the same drawer with the tupperware containers. Classes, in classification theory, are grouped based on similar properties and distinguished from co-ordinate classes based on an unlike property. Her idea, as far as I can tell every morning, is that travel mugs have lids, are used outside the house, and are not made of glass.

I, on the other hand, continue to move them to the cupboard with the glasses and china mugs, on the basis that they are also made to hold coffee and tea, and they are not made to hold solids.

Think there is a solution to these different paradigms of hot beverage container storage? Nope.