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Old December 27th 17, 10:35 PM posted to
Bill Wright[_3_]
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Posts: 2,448
Default A discussion in that D-I-Y group

On 27/12/2017 19:02, Graham. wrote:

I am in no way qualified to give an answer, but after 30 seconds
thought I have came up with an analogy. Imagine how your concentration
on the road ahead would be affected if your rear-view mirror was
replaced with a screen that flashed helpful text messages about what's
happening behind you...

You'd soon get used to it.