The user who posted this query solved their own problem before anyone could answer, and that solution, adding a grouping column and using a PivotTable, is exactly the right instinct. But the fact that they first considered manually typing `=A2+A6+A30` across hundreds of cells tells us something important: traditional spreadsheets have trained us to think in terms of cell addresses and manual formulas, even when the real task is about meaning and relationships. This is not a failure of the user. It is a failure of the tool.
What this person needed was a way to say "Dublin equals the sum of South Dublin, North Dublin, and Central Dublin" and have the software understand that association without requiring a brittle chain of cell references. They wanted to map one set of categories to another and have the aggregation happen automatically. That is a fundamentally data-oriented question, yet the default answer in Excel is still a manual formula or a clunky workaround. The PivotTable solution works, but it requires you to reshape your source data and know the feature exists. Many users never discover it.
This is where AI-native spreadsheet logic changes the game. Instead of forcing the user to translate their mental model into cell coordinates and manual sums, a smarter system could simply accept a plain-language instruction: "Group these 100 regions into these 30 regions, then sum the population for each group." The tool should handle the mapping, the aggregation, and the maintenance if the source table changes order. That is not a revolutionary idea. It is a baseline expectation for software that claims to support real data work.
The deeper point is about trust. Every manual formula you write is a potential break point. Every time you copy a cell range down a column, you introduce the risk of a misaligned reference. Users spend enormous effort protecting their spreadsheets from their own fragility. A tool that understands relationships, not just cell positions, frees you to focus on the analysis itself. That is the shift we should demand. Not a fancier spreadsheet, but a fundamentally more capable partner in the work.