Behaviour
Effort feels like it should be rewarded and markets disagree
In most domains additional work produces better outcomes, and the assumption transfers badly to investing, where extra activity frequently subtracts from the result.
Effort reliably improves outcomes in nearly every skill people practise. Investing is one of the few areas where the relationship weakens and can reverse, which makes it deeply counterintuitive.
Where the intuition comes from
Almost everything else rewards work. Practising an instrument, studying a subject or training for a sport all produce improvement roughly in proportion to the effort applied.
That relationship is learned early and applied broadly. Faced with an unfamiliar domain, most people assume that working harder at it will help, because it always has before.
Investing presents itself as a similar problem. It has data, technique and specialists, all of which signal a field where study pays, which is what makes the assumption so durable.
Why the relationship weakens
Effort improves outcomes when the domain gives clear feedback and does not have an opponent. Markets provide noisy feedback and consist largely of other people applying effort simultaneously.
Prices already reflect the work of a very large number of participants. Additional analysis by one more person therefore adds to a total that was already substantial.
The consequence is not that knowledge is useless. It is that the returns to additional effort fall away far sooner than experience in other fields would suggest.
Effort seeks somewhere to go
The instinct to work does not disappear when it stops helping. It relocates to whatever in the process is available to be worked on, which is usually the choice of holdings.
Fund selection absorbs research well because there is always more to read. It also produces a sense of progress that contributing quietly to an existing arrangement does not.
Meanwhile the decisions that matter most, which are how much is contributed and whether it continues, take minutes and then require nothing further.
Activity carries a direct cost
Beyond the wasted attention, activity is charged for. Each change incurs dealing costs and spreads, and those are certain while any improvement is speculative.
The costs are small individually and continuous in aggregate. A portfolio adjusted whenever a new idea arrives pays a running fee for the privilege of feeling attended to.
There is also a timing cost. Money in transit between holdings is not invested, and the gaps accumulate for portfolios that are frequently rearranged.
Redirecting the effort
Effort is not wasted everywhere in this domain. Understanding charges, checking that arrangements are still running and confirming the allocation still matches the horizon all repay attention.
What those tasks share is that they are finite. Each has an answer, the answer stays valid for a long period, and further work on it produces nothing.
Accepting that is harder than it sounds, because doing very little feels like negligence. The discomfort is the intuition protesting rather than a signal that something has been missed.
Questions readers ask
Does the witness need to understand investing?
No. Their job is to remember what you said and ask about it. Someone with strong opinions about holdings is usually a worse choice than someone with none.
What if my plan genuinely needs changing?
Then change it through the procedure you wrote down, which normally means a delay and a written reason. The point is to filter impulses, not to freeze the plan.
