Starting savings efforts young, and taking advantage of the wonder of compounding interest, is a long-standing staple of financial planning advice. The longer the time horizon, the less that needs to be saved to achieve a retirement goal. Yet the caveat of such an approach is that while it's crucial to start saving initially, after the first decade or two the ongoing contributions have less and less impact, as the results are increasingly dominated - for better or for worse - by the portfolio returns.
In fact, by the time the retirement date approaches, the outcome becomes so dependent upon returns, that a poor final decade of performance can drastically derail the entire retirement plan. Saving steadily to grow a portfolio over the span of 40 years begins to look more like saving half the goal in the first 30 years, and quickly doubling the account balance and retiring. Of course, when viewed from this perspective, it suddenly becomes clear that the save-a-little-for-a-long-time approach to retirement is far riskier than most realize.
Ultimately, that doesn't mean people shouldn't start saving early for retirement. But it does recognize that a retirement plan that is heavily reliant on returns can have highly adverse outcomes, where the risk is not just the potential that wealth is significantly less than originally projected, but that retirement will have to be delayed significantly further than originally planned. In fact, perhaps it's time to talk less about risk as standard deviations and the volatility of wealth, and more about retirement date risk and the volatility of when the client will be able to retire, instead?