Sir, - I have to put pen to paper in praise and thanks for Brendan McWilliams's very interesting and highly knowledgeable series.
The art of the expert in any field is to explain something complicated in a simple but well-written way which is easily understood by lay people.
It is also quite obvious that Dr McWilliams enjoys his work.
Long may the series continue. - Yours, etc.,
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Victor Freeman, St Helen's Road, Booterstown, Co Dublin.