I don't have a scientific brain either but he always seemed to be able to explain things so the rest of us could understand. I also loved that he never tried to lose his Bristol accent.
Someone phoned into the local radio this morning and said he had grown up with him and that he was always brighter than the other kids, he said that a couple of days before Bonfire Night, Colin would be on the local piece of waste ground testing his home made rockets and that he had a scar under one eye as a result of one of those experiments going wrong!!
I've just checked when that was ..... surely not 2003!