It is hard to imagine life without digital search and the internet. This is as true for me as for anyone else: the greater ease of obtaining and checking relevant facts and data has transformed the life of the columnist. Pulling books from library shelves and turning their pages was never an efficient search technique, even if sometimes an entertaining and instructive one. But exercises that once required hours in a library, and were often unproductive, can now usually be accomplished with a few mouse clicks.

This change, which has taken place in the 20 years since I first wrote a column for the Financial Times, highlights wider shifts in the nature of knowledge and corresponding methods of education. Today it is less important to know, and more important to know what is known. The options trader need not be familiar with Black-Scholes equations, though he must know that they exist, and that others give them weight: the lawyer need not recall the judge’s reasoning in Bloggs v Bloggs, but must still have the higher-level knowledge that guides her search for relevant cases.

At the frontiers of knowledge, the finance academic who seeks to find a more advanced option pricing model, or the judge who must determine the case to which Bloggs v Bloggs applies, must still acquire personal mastery of all relevant information. But writing newspaper columns, running businesses, managing assets and advising clients in legal disputes are activities whose primary demand is synthesis. The ability to make connections between disparate sources of information is more critical than detailed familiarity with any specific source. This is the task that modern technology has made so much easier.