Many households still had black-and-white televisions. To the color-television industry, that looked like years of customers waiting to buy. Yet the industry encountered a glut. The missing information was how many households would pay the asking price. Possible users had been counted as willing customers.
Philip Fisher uses this example to show how accurate figures can support a mistaken conclusion. Writing in the early nineteen seventies, he asks investors to inspect the investigation behind a recommendation. Someone must establish what makes a business worth owning, then check whether this company qualifies. Its operations, people, competitive position and price all matter. You may need help doing that work. Understanding the process lets you judge the help more intelligently.
What the numbers leave out
Fisher starts with public records. Reports and filings reveal financial strength, the profit left from sales, differences between divisions and executive pay. Compare those findings with competitors and with the company's own past. Sometimes the records expose enough weakness to reject a candidate before spending time on further inquiries.
Accounting choices need attention too. Conservative accounts resist making present results look better than they are. Fisher also sees them as a possible clue to managers willing to endure unpopularity for longer-term results. A clue is not proof. Troubling accounts call for closer investigation, and a decade of improving sales cannot establish that improvement will continue.
Research spending makes the problem concrete. One company charges a pilot plant to research; another puts it under manufacturing. Their published research budgets measure different things. Even after correcting that difference, the larger budget need not produce better results. Specialists may cooperate poorly, pursue the wrong market or choose less rewarding projects. Knowing how much went in leaves the important question of what came out unanswered.
Public documents also tell you much of what other investors already know. Management's commentary may emphasize achievements and pass over weaknesses. Fisher therefore moves next to knowledgeable outsiders. Suppliers can describe operating reliability; customers can assess products and service; competitors often understand strengths and weaknesses that a shareholder letter leaves out.
These sources need checking themselves. A former employee may know a great deal and resent being dismissed. Neither accepting the account whole nor throwing it away resolves that problem. Compare it with other informed accounts. Disagreement means more work. Trade shows can help investigators reach knowledgeable people, though some unusual businesses offer few independent contacts. Use the available evidence while recognizing what remains unknown.
Only then does Fisher approach management. Prior inquiries prepare specific questions and help prevent an impressive executive from becoming a substitute for an appraisal of the whole organization. Sound policies and faithful execution are separate matters. A promise of excellent service means less if customers cannot get equipment repaired. Talk of valuing employees needs checking against grievances and the preparation of capable successors.
Former associates can help test an executive's account of past work. Trustworthiness, ingenuity and clear communication matter alongside persistence. The hard judgment is whether a leader can stick with a sound decision through trouble and change course when new facts require it. These assessments remain fallible. Visible warning signs prompt inquiry rather than automatically deciding the entire case.
The target is ability and policy that can shape years of results. A private tip about a new order might move a share price without establishing lasting quality. Fisher's distinction concerns the purpose of investigation; it supplies no present-day rule about disclosure law.
Who has done the work?
Putting the findings into a model does not settle every judgment. In his historical criticism of computerized stock selection, Fisher questions the accuracy of the inputs and how much importance each should receive. Management changes, competition and uncertain product prospects complicate the calculation. Comparing similar bonds, he argues, involves fewer factors that are easier to quantify. This is his argument about the tools of his time, not an assessment of today's computing. He also rejects precise market forecasts when numerous changing influences can alter the result.
Most readers cannot repeat every inquiry. Fisher says competent investing takes training and practice, or unusual aptitude. Learning the process can help you recognize when you need an expert and ask who did the background work. A trustworthy research firm matters, but so does the representative conveying its findings. Excellent work can be passed along badly.
A recent winning record answers a different question. Rising markets can reward poorly prepared recommendations. They can also make skilled analysts complacent, doing less checking while remaining confident. Sincere advice can therefore cause losses through neglect. When markets turn gloomy, the opposite error is possible: rejecting accurate good news without investigation. Optimism and skepticism both need evidence.
Fisher proposes a way to make preparation inspectable. People recommending securities or managing money for the public would record whom they contacted and how much time they spent before acting. He would exclude the conversations themselves, so sources could speak critically without fearing enemies. This is a proposal, not a rule he reports as law. It could reveal whether work occurred. The contacts' knowledge and the reasoning would still need judgment, and careful investigation could still end in a loss.
Three things to keep
Check what a number measures before trusting what it seems to predict.
Independent inquiries prepare an investigator to test management's account of the business.
An adviser's effort deserves inspection; neither effort nor recent success guarantees sound judgment.