Another way of phrasing that is: 1 bit of information. In a very competitive sport. And yes, there is a long history of this, as the article makes clear; and,

Another way of phrasing that is: 1 bit of information. In a very competitive sport. And yes, there is a long history of this, as the article makes clear; and, as the article also makes clear, rules specifically limit the methods by which such information can be acquired and transmitted, which using an Apple Watch violates. Kind of like how part of the strategy of bridge is efficient use of a well-defined and restricted information channel, and using other methods to transmit the same information is considered cheating.