You are feeding into what he is saying about there being a lot of context that gets ignored in the name of fact checking. In this case the implicit qualifier is that the liquid is RIGHT NOW 72 degrees. He clearly isn't stating that the liquid will always be that temperature. Of course if you come along later there can be a different environment.
You are feeding into what he is saying about there being a lot of context that gets ignored in the name of fact checking.
You have to understand that clunky little human minds can be easily swayed. The truth is absolute, but the human mind's comprehension of it is not.
In this context, the "dirty trick" is obvious to anyone who knows that coffee and bathwater change temps over time, and that the pool is warmer at noon. What about contexts in which specialized knowledge is necessary to fully understand what is going on? There is a reason why there is a 5th amendment.
Reality is logical and obeys the laws of physics. The social reality that exists across many people's minds is contradictory and treacherous. (If you are affluent enough and have never had extensive contact with the judicial system, it's hard to know this.)