Exactly. Folks should be dressed for the season: it is fundamentally unreasonable to be wearing nothing but a T-shirt in the winter, or to be wearing a sweater

Exactly. Folks should be dressed for the season: it is fundamentally unreasonable to be wearing nothing but a T-shirt in the winter, or to be wearing a sweater in the summer. This means being dressed in such a manner as to be comfortable walking at a moderate pace outdoors (such as if one were walking to & from a transit stop), modulo removable outerwear. That implies that the office temperature should be low enough in the winter in northern latitudes to be pleasant for those wearing long underwear. It should not be hot indoors in the winter. In the summer, it should be warm enough to still be comfortable for folks wearing short sleeves, maybe short pants (depending on how warm it gets outside). It should not be cold indoors in the summer.