Opinion | James Palmer, chair of Eastern Powerhouse, says polycentric growth would accelerate potential and distribute economic benefits equitably. It has taken a long time for government to recognise Cambridge as the pre-eminent science and technology cluster in Europe, but it seems with the Case for Cambridge, there is hope for the future of the city and for the region. I grew up less than 20 miles from Cambridge and it is, therefore, my home city. I have seen the city change completely from the one I knew as a young man, transformed from a university city with farming as the main industry t…