In Great Barrier Reef David Attenborough recently made a record-breaking dive in a state-of-the-art submersible. ‘Your instinct is to hold your breath’, he said, as the sea closed over the clear dome of the submersible at the start of the descent.
‘When you have two data points, it is very likely that one will be different from the other.’
W Edwards Deming
Random variation affects everyone in everything we do. Take two work days, and the length of our commute will vary by a few minutes. Count calories, and it’s highly unlikely that we’ll consume exactly the same number on two different days. Swim 1500m at two triathlons, and your time will not be the same.