Hummingbird re-viewed
It is always good to look back and try to analyze the impact of the update. Hummingbird is different algo update. And since most SEO`s have a ranking-centric view on algo updates, Eric makes sure that not every update is solely for ranking:
Bottom line, Hummingbird was a rewrite of the search platform designed to allow Google to process new types of signals in new types of ways.
If you see some new type of algo come out, or some major change to an existing algorithm, Hummingbird probably enabled it.
According to Eric step-by-step instructions in search results is an example of an update that was enabled by Hummingbird because:
it maps out something quite different: the concept of a procedure
Google has to parse the page and recognize that there is a set of step-by-step instructions?
Assessing Hummingbird`s Impact On Search -- 10 Months Later