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a yw'n cofio'r pum mlynedd a dreuliodd yn gwrthwynebu adeiladu morglawdd bae caerdydd ? a yw'n cofio sut y rhybuddiodd yn aml yn ystod y pum mlynedd hynny y byddai'r lefel trwythiad o dan y bae , ac yn arbennig sblot , yn codi ac yn achosi llifogydd i'r trigolion ? a oedd yn anghywir neu a anghofiodd wneud ei waith cartref ?
does he recall the five years that he spent opposing the construction of the cardiff bay barrage ? does he recall how frequently during those five years that he warned that the water table under the bay , and particularly splott , would rise and flood out the residents ? was he wrong or did he simply not do his homework ?