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You have to keep your focus, if you are intending to run a window cleaning business.
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I'm not absolutely sure of this, but wasn't Andrew McCann a window cleaner? I think he has focus.
And what about Alex Gardiner? He's a window cleaner, isn't he? And doesn't he have focus?
Focus is fine, and very valuable, Ewan. But it isn't sufficient by itself. You also need to have a zoom lens.
Sometimes you need to zoom in and look at the very fine detail. At other times you need to zoom out and look at the bigger picture to see how all the elements fit together.
Most people are naturally inclined to think either zoom out or zoom in - big picture or fine detail.
The very smartest people have trained themselves to zoom in and out all the time. They look at the big picture and then decide where it can be improved. They then zoom in and work on that specific detail, all the time zooming in and out to check that things are still fitting together. That's how systems are created - as systems are made up of interlinking parts.
It strikes me, Ewan, that your focus is on the detail. Try zooming out and seeing the bigger picture.
(Academics are very often mocked for their specialisations and lack of ability to zoom out. The joke is that they learn more and more about less and less until they know everything about nothing.)