One of the hallmarks of great leaders is that they do not confuse their personal opinion with fact. Some of the most productivity-killing breakdowns happen when we treat our view of any matter as an empirically provable fact. "It's hot in here" is an assessment and therefore cannot be proven or disproven empirically. You may be warm, but that does not mean anyone else is. "It is 78 degrees in here" or "I am uncomfortably warm" are assertions which may be true or false, but may be empirically measured.