The best candidates are rarely looking
Why the most valuable person for a mandate is almost never the one who applied.
The people who move a book, a desk, or a research agenda are, by definition, doing well where they are. They are not refreshing job boards. They are heads-down on the work that made them worth hiring in the first place.
This is the central inconvenience of senior search. The strongest signal a candidate can send — an active application — is precisely the signal the best ones rarely send. The market you can see is not the market that matters.
Reaching the people who matter is not a volume problem. It is a trust problem. Someone content in their seat will take a call only from a source they respect, about something specific enough to be worth their attention, handled with enough discretion that the conversation costs them nothing if they pass.
That is why a search worth doing cannot be automated into an outreach sequence. The work is quiet. It is slower. And it is the only part of the job that actually determines the outcome.