@Andrew-Ross said in what3words:
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While is some cases it may be easier to give ‘words’ rather than numbers there are some easily confusable words in nearby locations and spelling, particularly for those that suffer with Dyslexia, can prove difficult. Eg: circle.goal.leader and circle.goal.leaders are less than 2km apart along the River Thames.Some more info on the BBC: https://www.bbc.co.uk/news/technology-56901363
I can imagine that some people won't always distinguish a GPS location in decimal form from the same location in its latitude/longitude form. Also then, the distance between these 2 isn't necessarily big (far away from each other).
And confusion could also arise when mispronouncing or misunderstanding "first" and "third". Or when miscounting, like e.g. "after having crossed the bridge, was it the fifth or the sixth street on the right side".
So in my opinion, this W3W system can also have its benefits.