In a student team or a large company of different ages, you can change partners for a long time without leaving your circle. However, a permanent pair is difficult to find.
When we have to choose from a lot of similar things — for example, from dozens of varieties of chocolate in a store, our brain “slows down”: we take longer to make a decision or even put it off. The same thing happens with the choice of partner, found out the British psychologist Alison Lenton and economist Marco Francesconi (Alison Lenton, Marco Francesconi). Too much choice forces us to pay attention to a variety of parameters and makes it difficult to stop at one.