Horological Meandering

It has never become quite clear to me why some brands choose to have no hacking (Journe, Patek..etc.) watches and others the opposite? It seems it is more a philosophy for individual brands wheter a watch should hack or not? (memory from the top of my hea... 

my understanding is that during WW2 the hacking second was desirable so that people could synchronise watches exactly. very important when launching an attack. i think nowadays some companies have hacking seconds so that owners can check the watches accur... 

Hi, I dónt know if the WW2 navigators watches did have a hacking feature but I guess it would have made sense. The way I understand the operation of flight crews watches was, that the navigators/observers precision watch (used for navigation purposes) was...