The user's dilemma is exactly where traditional spreadsheets stop being useful and start being a barrier. They have time-series data, a common, real-world scenario, and they need to apply Goal Seek across many rows at once. The built-in tool can only handle one row at a time. So they are left asking if they need Solver, VBA, or a macro. The honest answer is that none of those are the right tool for this job. They are workarounds, not solutions.
What this tells us is clear: the spreadsheet model itself is the limitation. Goal Seek was designed for a single, static calculation. It was never built to handle dynamic, multi-row scenarios because the underlying architecture wasn't designed for that scale. Users like this one are not asking for something exotic. They are asking for a logical extension of an existing feature. The fact that the answer is "write a macro" or "use Solver with a loop" reveals how far behind the tool has fallen relative to the actual workflows people have. This user's request is straightforward: give me a formula cell, a range of target values, and the corresponding cell to change. That is not an unreasonable ask. It is a missing feature.
For anyone working with time-series data, this is a daily friction point. You are not trying to do something advanced. You are trying to solve for a trend, a target, or a constraint across many periods. The manual approach is tedious. The macro approach is brittle. The Solver approach is overkill. What you need is a tool that understands data as a series, not as isolated cells. An AI-native spreadsheet can do exactly this: it can take your single formula, your range of target values, and your changing cell, then solve across every row in one step. No looping, no scripting, no workarounds.
The practical takeaway is that your time is better spent finding a tool that matches your actual workflow rather than forcing a legacy tool to do something it was never designed for. If you are repeatedly hitting the limits of Goal Seek, that is not a sign that you need better coding skills. It is a sign that the tool needs to evolve. And it has.