I assume that's just another term for the "dark ages", the time between losing interest with LEGO as a child and re-discovering it as an adult.
Welcome to Eurobricks!
Hi Eurobricks! I'm Duncan, and I'm one of those AFOLs who never went through a Dark Ages. By day, I'm a software developer. My chief interests are mecha and constraction/Bionicle builds, but occasionally I dabble in Technic or castle builds.