By Mike Steel Where the City’s thinkers get a few things off their chest. Today, Mike Steel, general manager at Moody’s RMS, takes the Notebook pen. Past performance is no guarantee of future resultsAt the bottom of investment adverts or brochures, the community uses the well-trodden disclaimer ‘past performance is no guarantee of future results’ to underline the potential for risk volatility. Perhaps this disclaimer is also useful when insurers access their wealth of historical data to look ahead. Property and casualty insurers face annual global insured losses that now move across the $100bn…