Sanity briefly restored by soaking my hair and sitting by the fan. How much heat do we lose through the head, anyway? According to Google, it's 30%, or possibly 40%, 40-50%, or could be over 50%, up to 70%, 50-80%, or even X%.
The water from the cooler tastes of tin. Or maybe it's my mouth.
Stop what you're doing and play with this interactive kaleidoscope! Or don't, if you prefer. It's colourful.