In conclusion, this is why Systems (Thermal) Control is a profession. Not dissing on the author's efforts, quite the contrary! But they demonstrate the rabbit

In conclusion, this is why Systems (Thermal) Control is a profession. Not dissing on the author's efforts, quite the contrary! But they demonstrate the rabbit hole that is second order effects (like multi-fan beat frequency) and number of parameters to take into account (like "... A solution to [when to enable Passive Mode] may be to detect if the computer is in use (mouse movements)")