In the open office environment I used to work in I got quite good at ignoring coworkers discussions about stuff they were working on. But as they crammed more a

In the open office environment I used to work in I got quite good at ignoring coworkers discussions about stuff they were working on. But as they crammed more and more people into the building, the probability of being within earshot of multiple discussions at once went up. I could sit in my chair getting angry when there was only two. When it got to three concurrent discussions I found I had to leave the vicinity. Some people could ignore it all. Impressive.