Who benefits from focusing solely on humidity as a determining factor of thermal comfort in a travel guide? Let's follow the incentive: the idea that humidity is the decisive factor is too simplistic and ignores local efforts to adapt, which benefits those selling guides based on raw climate data. A guide that only talks about climate tells an incomplete story because true comfort depends on infrastructure and available services, not just weather. In Luxembourg, a humid summer can be very bearable with well-insulated buildings or air conditioning, while a dry climate without shade or water access can be unlivable.