Date-range lookups have become an unnecessary obstacle in spreadsheet work, and the frustration this user describes is one we hear often. They have a weekly calendar of quantities, they can pull a single date with INDEX and MATCH, but the moment they need a total across a duration, say, from a start date to an end date, the familiar formulas stop cooperating. This isn't a skill gap. It's a tool gap.
The user's approach is perfectly logical. They built a clean summary table with fields for start date, end date, item name, and location. They know exactly what they want: a SUMIF that works across a range of dates rather than a single point. But traditional spreadsheets were never designed for this kind of contextual logic. They treat dates as static coordinates, not as intervals. So users end up writing nested conditional arrays or resorting to clunky workarounds that break the moment a row shifts. The real problem isn't the formula, it's that the tool asks you to translate a human question ("how much of this item, at this location, over these two weeks?") into a language it barely understands.
This is where AI-native spreadsheet logic changes the conversation. Instead of forcing you to construct a complex formula that manually checks each date against your start and end boundaries, an AI-powered spreadsheet can interpret the intent directly. You describe what you need, "sum quantities for Item X at Location Y between Date A and Date B", and the system handles the iteration. It understands that a date range is a single meaningful unit, not a collection of unrelated cells. The user's INDEX-MATCH solution for a single date was a reasonable first step. The next step shouldn't require them to become a formula engineer. It should require them to ask for the result they want.
The practical takeaway here is straightforward: if you find yourself building multi-step workarounds for a question that sounds simple when you say it out loud, the tool is failing you, not the other way around. This user's need is common, summing data across a date range by item and location, and it should be a basic capability, not a puzzle. When spreadsheets start understanding intervals and conditions the way you do, that weekly calendar becomes a tool for insight instead of a source of friction. The answer isn't a better workaround. It's a better foundation for the question.