Kerr MacGregor. obituary, from my personal perspective, touching on his inventions, talents, politics and other pleasures. I hope it paints a balanced picture, both of my knowledge of Kerr and of the gentlemanly obstructions which can be encountered by game-changing disruptive technologies such as his, safe, simple, sustainable solar water heating panels which are superior because they are freeze tolerant. Recorded in haste on the train home from Kerr’s funeral. Barry Johnston.