Yet it’s precisely such “packet drops” that lead a computer to notice that one of its packets hasn’t been acknowledged, prompting AIMD to start halving the bandwidth. Dropped packets are the Internet’s primary feedback mechanism. A buffer that’s too large—a restaurant taking every order no matter how short-staffed the kitchen, a modem taking every packet that comes in regardless of how long it’ll take to send them on—prevents this moderation from happening as it should.