Quote: 

"3. Wash with detergent in the warmest water the fabric will accept."

 

But what exactly is the warmest water?  It may seem like a harmless statement, as in the closest temperature to warm without being hot?  But when exactly does warm become hot and when does it become cold?  If there is no exact temperature to define warm, then warm is undefined, which means "warmest" is undefined.  If warm is the medium between hot and cold, then warm would be the midpoint between the hottest temperature in the world and the coldest temperature.  If both of these temperatures are positive and negative infinity, this means 0 degrees would be considered warm.  But it would also mean any temperature would be warm.     

 

I think I have now scientifically proven this point.