6.1.1 Process Over Outcome

Why outcome alone is a poor judge

Randomness plays a genuine role in short-term investment outcomes. A carefully researched, well-reasoned decision can still lose money over a single year purely due to factors nobody could have reasonably predicted, while a careless, poorly-reasoned decision can occasionally get lucky and work out. Judging quality purely by whichever happened to make more money in any one specific period rewards luck as often as it rewards genuine skill.

A good investment process does not guarantee a good outcome on every single occasion. A bad process can produce a good outcome through luck. The difference is sustainability: a good process, followed consistently, produces good outcomes more often than not over many iterations. A bad process produces good outcomes occasionally but bad outcomes more frequently and more severely.

Focusing on process means making investment decisions based on sound principles (diversification, asset allocation, cost minimisation, long holding periods) rather than on the most recent outcome. An investor who bought a diversified index fund and lost 20% in a crash followed a good process. An investor who put everything in a single small-cap stock and gained 200% followed a bad process that happened to work once. Judging the quality of the decision by the outcome alone misidentifies the lucky gamble as skill and the disciplined allocation as failure.

What good process actually looks like

A sound investment process means a decision was made for coherent reasons, sized appropriately relative to the rest of the portfolio, and consistent with the investor's own stated goals and risk tolerance. If those conditions were genuinely met, a disappointing result in any single year does not necessarily mean the underlying decision itself was wrong.

An investment policy statement (IPS), written during a calm period, codifies the process: target asset allocation, rebalancing rules, fund selection criteria, contribution schedule, and the conditions under which changes would be made. Reviewing the IPS during market turmoil provides a pre-committed anchor that resists the emotional pull of the moment. The IPS does not need to be elaborate; a single page of clear, specific rules is sufficient. What matters is that it exists and is consulted when the temptation to deviate arises.

Why this distinction matters over the long run

Investors who evaluate every decision purely by its most recent outcome tend to abandon sound strategies after a single bad year and chase whatever recently performed well, which is itself a well-documented, costly behavioural pattern. Evaluating the process instead makes it easier to stay the course through the inevitable bad stretches that any sound long-term strategy will periodically produce.