BBC Countryfile on 16th April had a piece about cutting reeds in Norfolk for thatching. After cutting, the reeds would be placed into loose bundles before being manipulated into very tight bunches for tying off and transporting.
The expert demonstrated the process of creating the bunches, and then the BBC presenter had a go. The result was not unpredictable! The expert's bunch was very tight and almost cylindrical - one could have measured the radius of the cross-section and recorded the result. The presenter's bunch was much looser, and it was obvious that the radius of the cross-section was much greater.
So - increased experienced and increased skill produced a result with much less variation. More bunches could be transported for a given cubic capacity of vehicle, and so less waste, reduced cost.
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