Covid-19 has changed the world. Well perhaps not the virus itself but the governmental response, which I continue to see as the biggest exercise in GroupThink madness the world has seen. But the change has come and a clear victim is Hammerson (HMSO), a heavily indebted owner of retail properties. Its last stated NAV was 601p, the shares trade at 84p. Either this is the cheapest stock going or something is so wrong that it could be horribly expensive.