What if?.Protect the downside[lower the risk] on shares by having for example an automatic selling point or stop loss system in place for when they start falling, but this would apply only for short term equity investment and not for long term equity investment because with long term you would only be turning a temporary loss into a permanent loss and you would likely miss the inevitable upturn by useing this method.P.S.No financial qualifications,but learned a bit from common sense and university of life.