Fan-Out Search
Split a question into angles, search them in parallel, collect the results
Fan-out search is a way of researching a question by splitting it into several smaller questions and running all of them at the same time. Each smaller question covers a different angle. The results come back together when they’re done.
Say you want to understand something from scratch. You could search for it once and read what comes up. Or you could search for its history, how it works today, who criticizes it, and what came before it — all at once. Fan-out search does the second. Each search runs independently, and the results are collected in one place.
Searching one question at a time is slow, and it tends to return the same kind of answer each time. Splitting the question keeps the angles separate. You get broader coverage, and the results don’t blur together.
The trade-off is coordination. The more searches running at once, the more overhead. At some point the overhead cancels out the benefit.
You’re planning a trip to a city you’ve never visited. A single search returns a list of popular attractions. Fan-out search splits the question: one search looks at which neighborhoods suit different kinds of trips, another finds what locals say to avoid, a third covers whether the time of year actually matters, a fourth looks at what things cost in practice versus what travel sites suggest. Each runs at the same time. You end up with a fuller picture than any one search could return — and you didn’t have to do them one at a time.