Brainlock Impact on Google Rankings (James Dooley Interview Paul Truscott)
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What Does “Brainlock Impact on Google Rankings (James Dooley Interview Paul Truscott)” Talk About?
This episode of the James Dooley Podcast features a deep dive conversation between host James Dooley and SEO specialist Paul Truscott on a concept called Google Brain Lock, which is the system Google uses to govern geolocation, geospatial relevance, and local search rankings. Paul explains how Google reduces every city to a single coordinate point called a centroid, surrounded by a defined boundary, and how proximity to that centroid directly influences visibility in Google Maps and local search results. The conversation covers why businesses closer to a city centroid require fewer reviews and less authority to rank, and how understanding city boundaries can prevent location pages from cannibalising each other.
The episode breaks down the critical difference between keyword plus city searches and near me searches, explaining that each type uses a different reference point for relevance. When a query contains a city name, Google uses that city's centroid as the anchor. When a user searches near me, their device location becomes the centroid. Paul also walks through how large cities like London, Manchester, and New York are subdivided into boroughs and suburbs within Brain Lock, while smaller cities like Coventry are treated as a single SERP. He shares practical methods for researching city boundaries and centroids using Google Maps itself, including how to spoof a location to test whether a city has been subdivided, making this guidance immediately actionable for local SEO practitioners.
“Brain Lock is essentially the system Google uses for everything related to geolocation, geospatial relevance, and geotopicality. The loc part literally stands for location. That system underpins how Google understands place, proximity, and relevance, especially for Maps, but it also affects web pages.”
— Paul Truscott
Who Are the Guests on “Brainlock Impact on Google Rankings (James Dooley Interview Paul Truscott)”?
Paul Truscott is an SEO specialist with deep expertise in geospatial relevance, Google Business Profiles, and local search systems. In this episode, he demonstrates a sophisticated, technical understanding of how Google processes location data, explaining concepts such as centroids, city boundaries, and the Brain Lock system in a way that is both accessible and immediately applicable. His approach to local SEO is rooted in data extraction directly from Google itself rather than relying on assumptions or third-party tools.
James Dooley is the host of the James Dooley Podcast and a local SEO veteran with over 15 years of experience in the field. His questions throughout the episode are grounded in real-world scenarios, referencing specific cities like Manchester to illustrate the concepts being discussed. His candid admission that he had never encountered the term Google Brain Lock before this conversation adds credibility to the idea that Paul Truscott is sharing genuinely novel and advanced insights.
What Are the Key Takeaways From “Brainlock Impact on Google Rankings (James Dooley Interview Paul Truscott)”?
Here are the key points discussed in this episode:
- Google Brain Lock is the internal system Google uses to process all geolocation and geospatial relevance signals, and it affects both Google Business Profiles and web page rankings in local search.
- Every city is represented in Google's system by a single centroid coordinate pair, and the closer a business is to that centroid, the less authority and reviews it needs to rank for city-name queries.
- Creating multiple location pages within the same city boundary will almost always cause cannibalisation because those pages are all competing for the same single SERP.
- Near me searches use the searcher's device location as the relevance anchor, while keyword plus city searches use the city's centroid, meaning service area businesses should align their location with where demand actually originates.
- Practitioners can identify city boundaries and centroids directly within Google Maps by searching a place name to see the red dotted boundary and using the get directions function to find the centroid point.
“If you are a new business and you can legitimately locate close to the city centroid, even via a serviced office, ranking becomes significantly easier. This applies only to city-based queries. For near me searches, the user becomes the centroid.”
— Paul Truscott
Is “Brainlock Impact on Google Rankings (James Dooley Interview Paul Truscott)” Worth Listening To?
This episode is worth listening to because it introduces a concrete, testable framework for understanding how Google actually processes location data, rather than relying on broad best practices or speculation. Paul Truscott's explanation of city centroids, boundaries, and the Brain Lock system gives local SEO practitioners a mental model that can be applied immediately when auditing existing location pages, planning new ones, or deciding where to position a Google Business Profile. The discussion is unusually specific, referencing real cities like Manchester, London, Birmingham, Coventry, and New York to illustrate exactly how Google treats different types of locations.
What makes this episode particularly valuable is the practical research methodology Paul outlines. He explains how to use Google Maps itself to extract boundary and centroid data, how to spoof a location to test whether a city has been subdivided, and why this research only needs to be done once per location rather than per industry. For anyone managing Google Business Profiles at scale, building large local page strategies, or trying to understand why location pages are cannibalising each other, this episode provides a level of clarity that is rarely found in mainstream SEO content.
Who Should Listen to “Brainlock Impact on Google Rankings (James Dooley Interview Paul Truscott)”?
This episode is ideal for:
- Local SEO professionals managing Google Business Profiles and Maps rankings for clients across multiple cities or regions
- Digital agency owners and strategists building large-scale location page campaigns who want to avoid cannibalisation and wasted crawl budget
- Business owners considering where to locate a serviced office or virtual address to maximise their Maps visibility for city-level searches
- Content and technical SEO practitioners who want to understand the geospatial logic behind how Google assigns relevance to location-based web pages
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What Are Listeners Saying About This Episode?
“The centroid concept alone was worth the entire listen. I immediately went to Google Maps and tested three cities I manage campaigns for, and the boundary research method Paul describes is genuinely something I had never thought to do before. This changes how I plan location pages going forward.”
“I've been doing local SEO for years and I still learned something new here. The distinction between near me searches and keyword plus city searches using different reference points sounds obvious once you hear it, but I had never framed it that way. Really sharp episode.”
“The cannibalisation point hit home hard. I've been building suburb pages inside the same city boundary for a client and this explains exactly why they've been competing with each other. Paul's advice on checking the SERP from different sides of the boundary before building pages is practical and something I can act on today.”
**James Dooley:** Google’s Brain Lock. Today I’m joined by Paul Truscott and we’re talking about something I’d never even heard of before in relation to Google Business Profiles and local map rankings. Paul, let’s get straight into it. What is Google Brain Lock? **Paul Truscott:** Brain Lock is essentially the system Google uses for everything related to geolocation, geospatial relevance, and geotopicality. The “loc” part literally stands for location. That system underpins how Google understands place, proximity, and relevance, especially for Maps, but it also affects web pages. It’s particularly important for people who overproduce location pages, because many of those pages end up cannibalising each other. That usually happens because they are built for the wrong places. Brain Lock is critical if you operate in local search, whether you focus on Maps, websites, or both. If you do both, the effects compound. Starting with web pages, Google creates a centroid for every location along with a defined boundary. If you go to Google Maps and search for a city, you’ll see a red dotted line showing that boundary. Sometimes the city appears smaller than expected, especially in the US, because many areas we would call suburbs are incorporated cities in their own right. That boundary usually defines a single SERP. In smaller towns, nearby villages may be folded into the same SERP for efficiency. The problem arises when people do not understand where that boundary sits. If you create multiple location pages within the same boundary, those pages will almost always cannibalise each other because they are targeting the same SERP. **James Dooley:** I’ve seen that with places like Manchester. You get the red dotted line, but inside it you still see areas like Oldham or Rochdale. They have their own boundaries, yet they sit within the wider Manchester area. **Paul Truscott:** That’s right. Large cities like London, Manchester, and Birmingham are subdivided. London is broken down by borough, Manchester by suburb, New York by borough. Smaller cities like Coventry are usually a single SERP. In the US, most mid-sized cities work the same way. Even when a suburb has its own boundary, if users are searching at a city level, suburb pages often cannibalise each other because Google still treats them as part of the same broader entity. That’s why understanding how Google subdivides locations is so important when you plan local pages across a region or country. You should always look at Google itself. The SERP and Maps tell you almost everything you need to know. Searching the place name, checking the boundary, and clicking “get directions” shows you the centroid. That centroid is not always visually central, but it represents the location entity Google uses. All of this sits within the Brain Lock system. Google looks at your content and decides which location it belongs to, then assigns weights to your signals accordingly. **James Dooley:** If you were entering a new country, say Spain, and building local pages from scratch, would you use Brain Lock to decide which locations to target? **Paul Truscott:** You use Google to extract the data, and Brain Lock is the system processing it. Practically, you would spoof your location using a Chrome extension or a mobile location changer. You find the city boundary, then run the same “near me” search from different sides of that boundary. If the SERP stays the same, it’s a single SERP city. If it changes significantly, the city has been subdivided. Once you know that, you avoid wasting time building unnecessary pages and avoid cannibalisation. The key thing is you only need to do this research once per location. It does not change by industry. **James Dooley:** That makes sense for web pages. What about Google Business Profiles? **Paul Truscott:** This is where it gets really interesting. Google has never publicly documented this, but testing shows that every city has a single pair of geo coordinates that represent the city entity. That pair is the centroid. Manchester, for example, is defined by one coordinate pair. The closer your business is to that point, the more relevant you are to searches that include the city name. The further away you are, the less relevant you become. This matters hugely for keyword plus city searches. Businesses closer to the centroid need fewer reviews, less authority, and less content to rank. Distance can be overcome by prominence, but proximity gives a massive advantage. If you are a new business and you can legitimately locate close to the city centroid, even via a serviced office, ranking becomes significantly easier. This applies only to city-based queries. For “near me” searches, the user becomes the centroid. **James Dooley:** So “plumber Manchester” uses the city centroid, but “plumber near me” uses the searcher’s location? **Paul Truscott:** Exactly. If the query contains a city, that city’s centroid is the reference point. If it is “near me”, the user’s device location is the centroid. That’s why service area businesses matter. You want your virtual or operational location aligned with where searches and calls actually come from. It is all nodes and edges. The shorter the spatial distance between nodes, the stronger the relevance. **James Dooley:** What about something like “near me in Manchester”? **Paul Truscott:** That’s a good one. I suspect Google weights the city first and confirms the user is within that boundary, then blends the signals. I’ll test it properly, but that would be my expectation. **James Dooley:** Paul, this has been incredible. I’ve been in local SEO for over 15 years and had never heard the term Google Brain Lock. The insight you’ve shared is next level. Thanks for coming on. **Paul Truscott:** Thanks, James. Absolute pleasure.
Creators & Guests
Host
James Dooley is a UK entrepreneur.