I work in construction saas of a certain kind, and when I visit customers there is a very very clear difference in quality/size/revenue in companies that allow headphones and those that don't.
I'll let you decide which ones you think are doing better.
Hah. When I write concrete statements someone always comes by and says that's wrong, or a bigoted view. So Ive been trying to see if letting people figure out the obvious answer themselves works better.
Obviously the place without headphones do way better.
I'll let you decide which ones you think are doing better.